{"id":51121,"date":"2026-11-13T19:04:52","date_gmt":"2026-11-13T19:04:52","guid":{"rendered":"https:\/\/lawnlove.com\/blog\/?p=51121"},"modified":"2026-11-13T19:05:02","modified_gmt":"2026-11-13T19:05:02","slug":"mast-year-acorns-lawn","status":"publish","type":"post","link":"https:\/\/lawnlove.com\/blog\/mast-year-acorns-lawn\/","title":{"rendered":"Why Some Years Bury Your Lawn in Acorns (Mast Years Explained)"},"content":{"rendered":"<figure class=\"wp-block-table is-style-stripes has-medium-font-size\"><table class=\"has-fixed-layout\"><thead><tr><th><strong>Key takeaways:&nbsp;<\/strong><\/th><\/tr><\/thead><tbody><tr><td>\u25cf <strong>Mast years come periodically:<\/strong> Oaks have a mast year roughly every 2 to 5 years, and the next year\u2019s crop is often smaller.<br>\u25cf <strong>Neighbors\u2019 yards can differ:<\/strong> Oak species don\u2019t all mast on the same schedule, so one yard can be buried in acorns while the next is nearly bare.<br>\u25cf <strong>Clear acorns before mowing:<\/strong> Rake, blow, or sweep away dense patches first, since acorns can dull mower blades or become projectiles.<\/td><\/tr><\/tbody><\/table><\/figure>    <p class=\"wp-block-paragraph\">Acorns and your lawn can usually coexist. But in some years, oaks drop so many acorns that mowing gets harder and seedlings may sprout.&nbsp;<\/p>    <p class=\"wp-block-paragraph\">We\u2019ll explain why some years bury your lawn in acorns (the reason is masting) and how to safely clear them. If the cleanup drives you nuts, <a href=\"https:\/\/lawnlove.com\/leaf-removal\">local leaf removal pros<\/a> can clear acorns and fallen leaves for you.<\/p>   <div class=\"wp-block-ub-table-of-contents-block ub_table-of-contents\" id=\"ub_table-of-contents-9c6c5a20-a67a-4bf9-bd23-c96352005794\" data-linktodivider=\"false\" data-showtext=\"show\" data-hidetext=\"hide\" data-scrolltype=\"auto\" data-enablesmoothscroll=\"false\" data-initiallyhideonmobile=\"false\" data-initiallyshow=\"true\"><div class=\"ub_table-of-contents-header-container\" style=\"\"> \t\t\t<div class=\"ub_table-of-contents-header\" style=\"text-align: left; \"> \t\t\t\t<div class=\"ub_table-of-contents-title\" style=\"\">In this article:<\/div> \t\t\t\t \t\t\t<\/div> \t\t<\/div><div class=\"ub_table-of-contents-extra-container\" style=\"\"> \t\t\t<div class=\"ub_table-of-contents-container ub_table-of-contents-1-column\"> \t\t\t\t<ul style=\"\"><li style=\"\"><a href=\"https:\/\/lawnlove.com\/blog\/mast-year-acorns-lawn\/#0-what-is-masting\" style=\"\">What is masting?<\/a><\/li><li style=\"\"><a href=\"https:\/\/lawnlove.com\/blog\/mast-year-acorns-lawn\/#1-what-triggers-oak-trees-to-drop-acorns-all-at-once\" style=\"\">What triggers oak trees to drop acorns all at once?<\/a><\/li><li style=\"\"><a href=\"https:\/\/lawnlove.com\/blog\/mast-year-acorns-lawn\/#2-why-do-mast-years-occur\" style=\"\">Why do mast years occur?<\/a><\/li><li style=\"\"><a href=\"https:\/\/lawnlove.com\/blog\/mast-year-acorns-lawn\/#5-why-your-yard-may-have-more-acorns-than-your-neighbor%E2%80%99s\" style=\"\">Why your yard may have more acorns than your neighbor\u2019s<\/a><\/li><li style=\"\"><a href=\"https:\/\/lawnlove.com\/blog\/mast-year-acorns-lawn\/#6-what-acorns-do-to-your-lawn\" style=\"\">What acorns do to your lawn<\/a><\/li><li style=\"\"><a href=\"https:\/\/lawnlove.com\/blog\/mast-year-acorns-lawn\/#7-how-to-clear-acorns-from-the-lawn\" style=\"\">How to clear acorns from the lawn<\/a><\/li><li style=\"\"><a href=\"https:\/\/lawnlove.com\/blog\/mast-year-acorns-lawn\/#10-will-the-next-year-be-quiet\" style=\"\">Will the next year be quiet?<\/a><\/li><li style=\"\"><a href=\"https:\/\/lawnlove.com\/blog\/mast-year-acorns-lawn\/#11-faqs\" style=\"\">FAQs<\/a><\/li><\/ul> \t\t\t<\/div> \t\t<\/div><\/div>   <h2 id=\"0-what-is-masting\" class=\"wp-block-heading\"><span id=\"what-is-masting\">What is masting?<\/span><\/h2>    <p class=\"wp-block-paragraph\">Walt Koenig, research zoologist emeritus of the University of California, Berkeley, describes masting, or mast-fruiting behavior, as \u201cthe variable and synchronous production of seeds by a population of plants.\u201d<\/p>    <p class=\"wp-block-paragraph\">For oaks, \u201cvariable\u201d means acorn crops rise and fall from year to year. A year with an exceptionally large crop is called a mast year. Oaks have one roughly every 2 to 5 years, which is why your lawn may be buried one fall and nearly bare the next.<\/p>    <p class=\"wp-block-paragraph\">\u201cSynchronous\u201d means masting happens across a plant population over a wide area, not just in one tree or group of trees.&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>Fun Fact:<\/strong> A single large oak can drop up to <a href=\"https:\/\/libanswers.nybg.org\/faq\/222824\" target=\"_blank\" rel=\"noreferrer noopener\">10,000 acorns<\/a> in a mast year.&nbsp;<\/p>    <h2 id=\"1-what-triggers-oak-trees-to-drop-acorns-all-at-once\" class=\"wp-block-heading\"><span id=\"what-triggers-oak-trees-to-drop-acorns-all-at-once\">What triggers oak trees to drop acorns all at once?<\/span><\/h2>    <figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"533\" src=\"https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2026\/11\/masting-years-acorn.jpg\" alt=\"A close-up of an oak branch with lobed green leaves turning yellow at the edges and several brown acorns hanging from thin stems, set against a soft, blurred gray background.\" class=\"wp-image-51125\" srcset=\"https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2026\/11\/masting-years-acorn.jpg 800w, https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2026\/11\/masting-years-acorn-300x200.jpg 300w, https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2026\/11\/masting-years-acorn-768x512.jpg 768w, https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2026\/11\/masting-years-acorn-610x406.jpg 610w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Environmental factors like rainfall and temperature can impact acorn production. Photo Credit: beholdereye \/ Adobe Stock<\/figcaption><\/figure>    <p class=\"wp-block-paragraph\">\u201cWe don\u2019t fully understand masting or what causes it,\u201d says Theresa Crimmins, director of the USA National Phenology Network. \u201cBut what we have ascertained is that weather plays an important role.\u201d<\/p>    <p class=\"wp-block-paragraph\">Koenig agrees. \u201cMost evidence supports environmental factors \u2014 temperature or rainfall during critical periods of seed development \u2014 as a key mechanism driving masting behavior.\u201d<\/p>    <p class=\"wp-block-paragraph\">In an <a href=\"https:\/\/digitalcommons.unl.edu\/bioscifacpub\/398\/\" target=\"_blank\" rel=\"noreferrer noopener\">18-year study<\/a>, Koenig and Johannes M.H. Knops tracked acorn production in two California oak species at sites up to about 460 miles apart. Their results strongly supported shared environmental conditions as a key reason the two species\u2019 acorn crops rose and fell together.&nbsp;<\/p>    <p class=\"wp-block-paragraph\">\u201cThere is, however, an important role for pollination also, particularly in synchronizing reproductive effort among wind pollinated trees such as oaks, among which masting is particularly prevalent,\u201d Koenig says.<\/p>    <h2 id=\"2-why-do-mast-years-occur\" class=\"wp-block-heading\"><span id=\"why-do-mast-years-occur\">Why do mast years occur?<\/span><\/h2>    <figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"532\" src=\"https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2026\/11\/squirrel-on-the-lawn.jpg\" alt=\"A red squirrel sitting upright on a green lawn, holding a small morsel of food in its front paws, with a blurred background of grass, fallen leaves, and soft yellow-green foliage.\" class=\"wp-image-51163\" srcset=\"https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2026\/11\/squirrel-on-the-lawn.jpg 800w, https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2026\/11\/squirrel-on-the-lawn-300x200.jpg 300w, https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2026\/11\/squirrel-on-the-lawn-768x511.jpg 768w, https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2026\/11\/squirrel-on-the-lawn-610x406.jpg 610w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Squirrels have more acorns than they can eat in mast years. Photo Credit: <a href=\"https:\/\/www.pexels.com\/photo\/squirrel-on-grass-458976\/\" target=\"_blank\" rel=\"noreferrer noopener\">Pixabay<\/a> \/ Pexels<\/figcaption><\/figure>    <p class=\"wp-block-paragraph\">Scientists don\u2019t know exactly why masting occurs. Two leading hypotheses are <strong>predator satiation<\/strong> and <strong>pollination efficiency<\/strong>.<\/p>    <h3 id=\"3-predator-satiation\" class=\"wp-block-heading\"><span id=\"predator-satiation\">Predator satiation<\/span><\/h3>    <p class=\"wp-block-paragraph\">The idea is that if oaks produced the same number of acorns each year, populations of acorn eaters, such as squirrels, chipmunks, and deer, would grow until they could eat most of the crop, leaving only a few acorns to grow into new trees.<\/p>    <p class=\"wp-block-paragraph\">Masting may solve this problem by making acorn production irregular. In lean years, oaks produce few acorns, which keeps predator populations small. In a mast year, oaks produce far more acorns than those smaller populations can eat, so more survive to sprout.<\/p>    <p class=\"wp-block-paragraph\">Crimmins explains there\u2019s an evolutionary benefit to oaks producing abundant acorns in the same year.<\/p>    <p class=\"wp-block-paragraph\">\u201cIf every so often, they all generate far more fruits than is typical, seed predators become overwhelmed and at least some of the fruits are left alone and are able to germinate into the next generation of trees.\u201d<\/p>    <h3 id=\"4-pollination-efficiency\" class=\"wp-block-heading\"><span id=\"pollination-efficiency\">Pollination efficiency<\/span><\/h3>    <p class=\"wp-block-paragraph\">As Koenig notes, pollination helps keep oaks in sync. That timing may also pay off. Oaks rely on wind to carry pollen from tree to tree, and according to a <a href=\"https:\/\/www.annualreviews.org\/doi\/10.1146\/annurev.ecolsys.33.020602.095433\" target=\"_blank\" rel=\"noreferrer noopener\">2002 review of masting research<\/a>, flowering heavily in the same years may improve pollination in wind-pollinated plants.<\/p>    <p class=\"wp-block-paragraph\">In a <a href=\"https:\/\/docta.ucm.es\/entities\/publication\/9b373568-f64c-449a-89a6-9dd1862fe3f1\/full\" target=\"_blank\" rel=\"noreferrer noopener\">2020 study of holm oaks<\/a>, trees that flowered in sync with their neighbors produced about twice as many acorns as trees that flowered out of sync.&nbsp;<\/p>    <h2 id=\"5-why-your-yard-may-have-more-acorns-than-your-neighbor%E2%80%99s\" class=\"wp-block-heading\"><span id=\"why-your-yard-may-have-more-acorns-than-your-neighbors\">Why your yard may have more acorns than your neighbor\u2019s<\/span><\/h2>    <figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"533\" src=\"https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2026\/11\/different-species-of-acorns.jpg\" alt=\"different acorns arranged in a row on a dark glossy surface, including an empty brown cap holding a dark nut, two green acorns with scaly and bumpy caps, and a large brown acorn with a fuzzy nut and a textured cap, showing how acorn size and shape vary between oak species.\" class=\"wp-image-51165\" srcset=\"https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2026\/11\/different-species-of-acorns.jpg 800w, https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2026\/11\/different-species-of-acorns-300x200.jpg 300w, https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2026\/11\/different-species-of-acorns-768x512.jpg 768w, https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2026\/11\/different-species-of-acorns-610x406.jpg 610w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Acorns from different oak species, showing variation in size, shape, and cap texture. Photo Credit: <a href=\"https:\/\/stock.adobe.com\/images\/multiple-kinds-of-acorn-nuts\/646544679\" target=\"_blank\" rel=\"noreferrer noopener\">SHELL<\/a> \/ Adobe Stock<\/figcaption><\/figure>    <p class=\"wp-block-paragraph\">\u201cAlthough masting behavior can be synchronous over large geographic areas, the factors correlating with mast years <strong>differ among species<\/strong>, and thus the conditions resulting in a large acorn crop in one place may not affect acorn production in another where the oak species differ,\u201d Koenig says.<\/p>    <ul class=\"wp-block-list\"> <li><strong>Oak group matters:<\/strong> Trees in the white oak family tend to produce more and larger acorns than trees in the red oak family.<\/li>    <li><strong>Cycles vary by species:<\/strong> The gap between mast years can vary from <a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC11847015\/\" target=\"_blank\" rel=\"noreferrer noopener\">one oak species to another<\/a>, and from year to year.<\/li>    <li><strong>The same year can be big for one oak and small for another:<\/strong> <a href=\"https:\/\/dwr.virginia.gov\/blog\/2026-acorn-production-report-still-solid\/\" target=\"_blank\" rel=\"noreferrer noopener\">Virginia\u2019s 2026 acorn survey<\/a> found white oak production above average and red oak production below average in the same season.&nbsp;<\/li>    <li><strong>Individual trees differ:<\/strong> Koenig notes that \u201cAlthough most trees of the same species may have a good crop in a mast year, a \u2018good\u2019 crop for many individuals may only be a small number of acorns.\u201d<\/li> <\/ul>    <p class=\"wp-block-paragraph\">Not sure which oak you have? Your local extension office can identify it.&nbsp;<\/p>    <h2 id=\"6-what-acorns-do-to-your-lawn\" class=\"wp-block-heading\"><span id=\"what-acorns-do-to-your-lawn\">What acorns do to your lawn<\/span><\/h2>    <p class=\"wp-block-paragraph\">A light scattering of acorns usually won\u2019t harm your lawn. According to the <a href=\"https:\/\/plantnebraska.org\/resources-events\/the-canopy-blog.html\/article\/2024\/10\/30\/acorns-aplenty\" target=\"_blank\" rel=\"noreferrer noopener\">Nebraska Statewide Arboretum<\/a>, squirrels and other wildlife usually collect them before they become a problem.&nbsp;<\/p>    <p class=\"wp-block-paragraph\">In a mast year, though, too many acorns can cause problems:<\/p>    <ul class=\"wp-block-list\"> <li><strong>Acorns may hurt your mower:<\/strong> The Nebraska Statewide Arboretum notes that a lawn mower can break down a few small acorns, such as those from red oaks. Larger acorns, like bur oak acorns, are more likely to damage your mower.&nbsp;&nbsp;<\/li>    <li><strong>Thick piles can smother grass:<\/strong> Like fallen leaves, a thick layer of acorns can block sunlight and oxygen from turfgrass.&nbsp;<\/li>    <li><strong>Seedlings can sprout:<\/strong> White oak acorns tend to sprout in fall soon after dropping, while red oak acorns usually wait until the following spring, according to <a href=\"https:\/\/extension.uconn.edu\/?p=3532\" target=\"_blank\" rel=\"noreferrer noopener\">UConn Extension<\/a>.<\/li> <\/ul>    <ul class=\"wp-block-list\"> <li><strong>Mast years attract more wildlife<\/strong>: A heavy acorn year can bring more <a href=\"https:\/\/lawnlove.com\/blog\/how-to-deal-with-nuisance-squirrels\/\">squirrels<\/a> digging in your lawn and raiding your bird feeders, plus more deer, which can eat your plants and carry <a href=\"https:\/\/lawnlove.com\/blog\/how-to-prevent-ticks-in-your-yard\/\">ticks<\/a>.&nbsp;<\/li>    <li><strong>Acorns can affect seeding:<\/strong> If you\u2019re seeding or <a href=\"https:\/\/lawnlove.com\/blog\/how-to-overseed-lawn\/\">overseeding<\/a>, keep new-seed areas clear of acorns during heavy drops.<\/li> <\/ul>    <h2 id=\"7-how-to-clear-acorns-from-the-lawn\" class=\"wp-block-heading\"><span id=\"how-to-clear-acorns-from-the-lawn\">How to clear acorns from the lawn<\/span><\/h2>    <figure class=\"wp-block-image size-full\"><img loading=\"lazy\" loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"533\" src=\"https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2026\/11\/Small-oak-seedlings-emerging-from-the-lawn.jpg\" alt=\"A small oak seedling with orange, amber, and golden-yellow leaves emerging from green grass in a low-angle view, with tall dry grass, seed stalks, and a blue sky softly blurred in the background.\" class=\"wp-image-51166\" srcset=\"https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2026\/11\/Small-oak-seedlings-emerging-from-the-lawn.jpg 800w, https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2026\/11\/Small-oak-seedlings-emerging-from-the-lawn-300x200.jpg 300w, https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2026\/11\/Small-oak-seedlings-emerging-from-the-lawn-768x512.jpg 768w, https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2026\/11\/Small-oak-seedlings-emerging-from-the-lawn-610x406.jpg 610w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Small oak seedlings emerging from the lawn. Photo Credit: <a href=\"https:\/\/stock.adobe.com\/ph\/images\/oak-seedling-just-clearing-the-grass-in-heartwood-native-tree-arboretum\/628574685\" target=\"_blank\" rel=\"noreferrer noopener\">John<\/a> \/ Adobe Stock<\/figcaption><\/figure>    <ul class=\"wp-block-list\"> <li><strong>Wear closed-toe, grippy shoes:<\/strong> Acorns underfoot can be slippery on pavement and decks.&nbsp;<\/li>    <li><strong>Rake, blow, or sweep:<\/strong> Gently rake the lawn or use a lawn sweeper or lawn vacuum, and <a href=\"https:\/\/lawnlove.com\/blog\/how-to-use-a-leaf-blower\/\">use a leaf blower<\/a> on hard surfaces. For heavy drops or acorns nestled in grass, a nut gatherer can collect large numbers quickly.&nbsp;<\/li>    <li><strong>Clear dense acorn patches before mowing:<\/strong> Acorns can <a href=\"https:\/\/lawnlove.com\/blog\/how-to-sharpen-lawn-mower-blades\/\">dull mower blades<\/a> or become dangerous projectiles. A lawn mower (or mulching mower) can break down a few scattered small acorns, but mowing over them regularly is hard on your equipment.&nbsp;<\/li>    <li><strong>Expect more than one pass.<\/strong> Acorns keep falling throughout fall and early winter.&nbsp;<\/li>    <li><strong>Keep up with leaves too<\/strong>: Acorns and fallen leaves tend to arrive together. See <a href=\"https:\/\/lawnlove.com\/blog\/how-to-clean-up-wet-leaves\/\">How to Clean Up Wet Leaves in Your Yard<\/a> and <a href=\"https:\/\/lawnlove.com\/blog\/what-should-you-expect-from-leaf-removal-service\/\">What to Expect from a Leaf Removal Service<\/a>.<\/li> <\/ul>    <h3 id=\"8-how-to-dispose-of-acorns\" class=\"wp-block-heading\"><span id=\"how-to-dispose-of-acorns\">How to dispose of acorns<\/span><\/h3>    <p class=\"wp-block-paragraph\">Here are 4 ways to dispose of gathered acorns:&nbsp;<\/p>    <ol class=\"wp-block-list\"> <li><strong>Compost them:<\/strong> Crush the acorns before adding them to the <a href=\"https:\/\/lawnlove.com\/blog\/what-can-cannot-be-composted\/\">compost<\/a>, otherwise they may sprout.<\/li>    <li><strong>Leave them for wildlife:<\/strong> If you don\u2019t mind visiting squirrels and deer, pile them at the edge of your property, away from the house and bird feeders.<\/li>    <li><strong>Donate them:<\/strong> Local farmers who raise animals that can safely eat acorns, such as pigs, may be able to use them.<\/li>    <li><strong>Toss them in yard waste:<\/strong> Check whether local waste management accepts acorns in yard-waste bins.<\/li> <\/ol>    <h3 id=\"9-how-to-remove-oak-seedlings\" class=\"wp-block-heading\"><span id=\"how-to-remove-oak-seedlings\">How to remove oak seedlings<\/span><\/h3>    <p class=\"wp-block-paragraph\">If oak seedlings sprout in the lawn, regular mowing usually keeps them from establishing. If they\u2019re growing in your garden beds, pull them early before they\u2019re hard to remove.&nbsp;<\/p>    <h2 id=\"10-will-the-next-year-be-quiet\" class=\"wp-block-heading\"><span id=\"will-the-next-year-be-quiet\">Will the next year be quiet?<\/span><\/h2>    <p class=\"wp-block-paragraph\">Often, yes, though acorn crops are hard to predict.<\/p>    <p class=\"wp-block-paragraph\">\u201cThe most general finding is that when trees invest a lot in acorn production, it depletes their resources and they tend to produce few acorns the next year,\u201d Koenig says.&nbsp;<\/p>    <p class=\"wp-block-paragraph\">\u201cBeyond that, it\u2019s difficult to predict acorn crops, especially since a majority of years are intermediate and neither notable \u2018bust\u2019 or \u2018boom\u2019 years.\u201d<\/p>    <h2 id=\"11-faqs\" class=\"wp-block-heading\"><span id=\"faqs\">FAQs<\/span><\/h2>    <div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1794257297378\"><strong class=\"schema-faq-question\">Is this a mast year?<\/strong> <p class=\"schema-faq-answer\">\u201cThere\u2019s no quantitative definition of what constitutes a mast year,\u201d Crimmins says. \u201cIt is more like \u2014 when you see an <em>awful<\/em> <em>lot<\/em> of acorns or seeds on the ground, when you feel like you are walking on marbles \u2014 that is a mast year.\u201d\u00a0\u00a0<br><br>\u201c<a href=\"https:\/\/www.usanpn.org\/nn\" target=\"_blank\" rel=\"noreferrer noopener\">Nature\u2019s Notebook<\/a> is a great way for homeowners to document what they are seeing,\u201d Crimmins says. Observers can log whether acorns are ripening and dropping, and how many they see.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1794257303666\"><strong class=\"schema-faq-question\">How long will acorns keep falling?<\/strong> <p class=\"schema-faq-answer\">\u201cThis is highly variable by location and by species,\u201d Crimmins says. \u201cGenerally, peak acorn drop occurs between late August and mid October.\u201d<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1794257323338\"><strong class=\"schema-faq-question\">Is climate change affecting masting?<\/strong> <p class=\"schema-faq-answer\">It may be.<br>\u201cSome models predict little or no effect of climate change, but several recent studies have found significant decreases in both annual variability and synchrony in seed production by some species due apparently to rising temperatures,\u201d Koenig says.<br><br>In other words, some trees may be producing more similar crops from year to year and masting less in unison. Koenig notes this could weaken the benefits that likely make masting worthwhile, such as producing more acorns than wildlife can eat and improving pollination, with potentially major effects on forests.<br><br>\u201cWhat we can say is that the impacts of climate change are likely to vary by species,\u201d Crimmins says.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1794257369326\"><strong class=\"schema-faq-question\">Are acorns bad for dogs?<\/strong> <p class=\"schema-faq-answer\">According to <a href=\"https:\/\/vetmed.tamu.edu\/news\/pet-talk\/what-to-know-about-dogs-and-acorns\/\" target=\"_blank\" rel=\"noreferrer noopener\">Texas A&amp;M\u2019s College of Veterinary Medicine<\/a>, acorns aren\u2019t usually toxic to dogs, though a few cases have been linked to liver or kidney damage.\u00a0<br><br>Serious illness is uncommon, since most dogs would need to eat a large amount to get sick. But even one or two acorns can upset some dogs\u2019 stomachs and cause vomiting or diarrhea.<br><br>Acorns can also make a dog choke, block its digestive tract, or damage its teeth. If your dog picks up an acorn, gently remove it if you can do so safely and call your vet if problems develop.\u00a0<\/p> <\/div> <\/div>    <h2 id=\"12-hire-a-local-lawn-care-pro\" class=\"wp-block-heading\"><span id=\"hire-a-local-lawn-care-pro\">Hire a local lawn care pro<\/span><\/h2>    <p class=\"wp-block-paragraph\">Removing fall acorns and leaves takes sweat and energy, the right equipment, and time you may not have. If you\u2019d rather hand it off, <a href=\"https:\/\/lawnlove.com\/leaf-removal\">Lawn Love<\/a> makes it simple: Get an instant quote, pick a time, and a vetted local pro will handle the rest.<\/p>    <p class=\"wp-block-paragraph\">Main Image: Fallen acorns and autumn leaves cover a grassy lawn. Photo Credit: <a href=\"https:\/\/stock.adobe.com\/images\/autumn-leaves-and-oak-acorns-in-the-park\/540567949\" target=\"_blank\" rel=\"noreferrer noopener\">Waldemar<\/a> \/ Adobe Stock<\/p>","protected":false},"excerpt":{"rendered":"<p>Learn why some years bring a flood of acorns and how mast years work, plus tips for managing acorns and your lawn, from cleanup to disposal.<\/p>\n","protected":false},"author":32,"featured_media":51169,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_et_pb_use_builder":"off","_et_pb_old_content":"","_et_gb_content_width":"","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[295],"tags":[342],"class_list":["post-51121","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tree-care","tag-tree-care"],"acf":[],"featured_image_src":"https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2026\/11\/Why-Some-Years-Bury-Your-Lawn-in-Acorns-Mast-Years-Explained-1.jpg","author_info":{"display_name":"Jane Purnell","author_link":"https:\/\/lawnlove.com\/blog\/author\/jane-purnell\/"},"_links":{"self":[{"href":"https:\/\/lawnlove.com\/blog\/wp-json\/wp\/v2\/posts\/51121","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lawnlove.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lawnlove.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lawnlove.com\/blog\/wp-json\/wp\/v2\/users\/32"}],"replies":[{"embeddable":true,"href":"https:\/\/lawnlove.com\/blog\/wp-json\/wp\/v2\/comments?post=51121"}],"version-history":[{"count":10,"href":"https:\/\/lawnlove.com\/blog\/wp-json\/wp\/v2\/posts\/51121\/revisions"}],"predecessor-version":[{"id":51366,"href":"https:\/\/lawnlove.com\/blog\/wp-json\/wp\/v2\/posts\/51121\/revisions\/51366"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lawnlove.com\/blog\/wp-json\/wp\/v2\/media\/51169"}],"wp:attachment":[{"href":"https:\/\/lawnlove.com\/blog\/wp-json\/wp\/v2\/media?parent=51121"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lawnlove.com\/blog\/wp-json\/wp\/v2\/categories?post=51121"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lawnlove.com\/blog\/wp-json\/wp\/v2\/tags?post=51121"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}