Holiday Calendar

Plant Something Day

Next celebratedWednesday, May 19, 2027

Plant Something Day asks exactly what its name asks, and the something is left entirely to you. Put a seed, a seedling or a tree in the ground on May 19, then write down the date so you know when it went in.

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YEARLY DATEMay 19
OBSERVED INUnited States
CATEGORYNature
SUBCATEGORYPlants
ORIGIN

Community Origin

FOUNDING ENTITY
Not documented
FIRST OBSERVED
Not documented
HOW THE HOLIDAY CAME TO BE

A trademarked phrase attached to an unrecorded day.

No founder, establishment record, or first observance is documented for Plant Something Day. A widely repeated claim that a national horticulture body created it is contradicted by that body's own published history.

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INTRO

Federal trademark file on a holiday nobody filed

Two words on a green plant stake carry a federal registration. The US trademark register dates the first use of "Plant Something" to July 31, 2010, by the Arizona Nursery Association. Plant Something Day, which shares those two words, has no recorded first use of anything.

That gap is not a scandal. It is the ordinary condition of a small calendar day. So the interesting question moves somewhere else, onto the date itself.

A national planting day has to pick one square on the calendar. Planting in America does not work on one square. USDA sorts the country and its territories into 13 hardiness zones, then splits every one of them in half again.

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ORIGINS

Plant Something Day history

CHAPTER 01

The nursery came before the holiday

American horticulture has a starting point, and it is not a marketing campaign. Smithsonian Gardens dates the first modern commercial nursery in the country to 1737, when Robert Prince opened one at Flushing, New York, with his son William; even that date is softer than it looks; the Arnold Arboretum's account has Robert propagating trees for his own fruit farm by 1723, with the business turning commercial slowly around him; there was no launch, only a man, eight acres and a growing list of trees.

The list survives. William Prince's first known advertisement ran on September 21, 1767, offering apple, plum, peach, nectarine, cherry, apricot and pear; his first catalogue followed four years later, a single sheet of paper carrying more than 230 plant selections.

CHAPTER 02

Washington was not impressed

In 1789 the newly elected president rode out to see it. George Washington arrived with John Adams, New York governor George Clinton and John Jay, which made the visit the closest thing American horticulture had to a state occasion.

He left unconvinced. Washington noted plenty of young fruit trees, then dismissed the shrubs as "trifling" and the flowers as "not numerous." Flushing had spent the previous seven years under British occupation, and almost nothing had been able to move in or out; the recovery was real but not permanent; in 1839 William Robert Prince imported more than a million mulberry trees from France, speculating heavily on the domestic silk industry; the price collapsed, the mortgage did not, and by 1841 the family lost the Linnaean Botanic Garden and Nurseries in foreclosure.

CHAPTER 03

Two words, one registration

The phrase that names this holiday belongs to that same trade, and belongs to it legally. The Arizona Nursery Association filed for "Plant Something" in August 2011. The mark registered on the Principal Register the following July, with the word "plant" disclaimed and the design set down as yellow lettering on a green plant stake.

It spread the way trade campaigns do, association by association. The trade press counted 16 state associations using artwork that arrived as brochures, plant tags and posters they could localize. That was the picture in May 2015.

Its appeal was its vagueness. "Plant something could mean anything," Angela Treadwell Palmer of Plants Nouveau told Nursery Management. "It's a versatile term."

CHAPTER 04

The day nobody founded

Somewhere in the following decade, those two words picked up a date, and who attached them to May 19 is not recorded anywhere: not in a proclamation, not in a trade announcement, not in a newsroom, not on the campaign's own pages, which carry no date at all. A founder does circulate: holiday-listing sites credit the National Initiative for Consumer Horticulture with creating the day in 2012. Search engines have repeated that back as settled fact.

It cannot be true. NICH's founders published the group's formation history in HortTechnology, and it dates the first outline of the initiative to a conference session in July 2014. The same paper records that when the group met in Washington that November of 2015, the participants reached no consensus on leadership going forward.

The organization's own history page opens in 2015 and never mentions the day. Neither does anything else. The earliest page for Plant Something Day held in the Internet Archive was captured in August 2022, eleven years after the archive first captured the campaign that shares its name.

TIMELINE

Timeline

First American nursery opens

Robert Prince opens the country's first modern commercial nursery at Flushing, New York, with his son William. The family business runs for almost 130 years.

A presidential inspection

George Washington tours the Prince nursery with John Adams, George Clinton and John Jay. He finds the fruit trees plentiful and the ornamentals disappointing.

Foreclosure ends the Linnaean nursery

A collapse in mulberry tree prices, after an import of more than a million trees from France, costs the Princes the Linnaean Botanic Garden and Nurseries.

Nebraska sets a tree-planting day

The State Board of Agriculture adopts J. Sterling Morton's resolution setting aside April 10 for planting. By contemporary estimate, more than a million trees go in across Nebraska.

Plant Something enters commercial use

The Arizona Nursery Association records this as its first use of the phrase. It registers the words as a federal trademark two years later.

First archived page for the day

The earliest capture in the Internet Archive of any web page for Plant Something Day. Nothing earlier has been located in the archive record.

WHY THIS DAY MATTERS

Why Plant Something Day Matters

TIMING

Soil temperature decides planting day, not the calendar.

SDSU Extension puts the minimum soil temperature for planting tomatoes at 65 degrees Fahrenheit, and lets lima beans, sweet corn, squash and pumpkins go in at 50. Last spring frost is published as a spread of percentiles rather than a single day, because certainty rises as you move up the range.

MEASUREMENT

What trees do for air, measured honestly

US Forest Service researchers estimated that trees and forests across the contiguous United States removed 17.4 million tonnes of air pollution in a single year, within a modelled range of 9.0 to 23.2 million. The same paper put the resulting change in air quality at less than one percent, with most of the removal happening in rural areas and most of the health benefit landing in cities.

EVIDENCE

The health case comes with its own warning label

A review in the Royal College of Physicians journal reports that higher proportions of green space are associated with less depression, anxiety and stress. Its author, Richard Thompson, adds that associations are not proof and that such studies carry residual confounding with income, housing and lifestyle that is difficult to disentangle.

BY THE NUMBERS

Plant Something Day by the Numbers

$13.8B
US horticulture crop sales, 2019
20,655
US horticulture operations, 2019
13,412
Weather stations behind USDA zone map
80M
Users of the USDA hardiness map
~36M
US food-gardening households, 2008

MYTH VS FACT

Common Misconceptions

The myth

Your hardiness zone tells you when to plant.

The truth

It does not. A zone is the average annual extreme minimum winter temperature for a location over 30 years, so it describes what can survive the cold there, not what week to put seeds in the ground.

The myth

The 2023 hardiness map is a measurement of climate change.

The truth

USDA cautions against reading it that way. The agency says the updates are not necessarily reflective of global climate change, and attributes most of the zone shifts to a more recent data period, more weather stations and better mapping methods.

The myth

Houseplants lift your mood by releasing negative ions.

The truth

Plants do produce charged ions from their leaves, but the review in the Royal College of Physicians journal calls the overall evidence that those ions affect mood unconvincing, despite advertising that leans on it.

The myth

A national planting day means the whole country plants at once.

The truth

The oldest one does not work that way. The Arbor Day Foundation notes that a number of state Arbor Days sit away from the national date, running from January and February in the south to May in the far north, to match the best local planting weather.

GET INVOLVED

How to Observe Plant Something Day

EDITOR'S PICK

Take your soil's temperature before you plant

A thermometer pushed a few inches into the bed answers the question a calendar cannot. SDSU Extension publishes the minimum for each crop, so you can check the one you are about to put in.

ASK

Ask an extension master gardener

A 2015 count put 83,389 Extension Master Gardener volunteers across the United States and Canada. They answer through state extension services, the same system that publishes the soil-temperature guidance.

PLANT

Plant something, then write down the date

One line in a notebook, with what went in and when, is the beginning of a record only you can keep. The frost maps gardeners rely on are themselves built from 30 years of local observation.

FIND

Find the tree-planting day your state keeps

Arbor Day is observed in all fifty states. The Arbor Day Foundation explains how the state observances came to sit where they do on the calendar.

READ

Read the study behind a garden health claim

Plant marketing borrows heavily from research that hedges more than the marketing does. Thompson's review in Clinical Medicine is a short, readable example of a supporter of gardening setting out the evidence's limits.

Test your knowledge

How well do you know Plant Something Day?

1 / 8

What does a USDA plant hardiness zone actually measure?

Answer

No. It is an unofficial observance with no federal, state, or municipal recognition, so it is a normal working day.

COLOPHON

Sources

How we know what’s on this page. References, not endorsements.

14sources
10primary records
10independently dated
Primary records
United States Patent and Trademark Office2021
PLANT SOMETHING, TSDR status view, serial 85404062
The federal trademark file, with a sworn first-use date of July 31, 2010.
View source
USDA Agricultural Research Service2023-11
USDA Unveils Updated Plant Hardiness Zone Map
What a hardiness zone measures, and USDA's caution against reading the map as climate evidence.
View source
USDA National Agricultural Statistics Service2020-12
U.S. Horticulture Operations Report $13.8 Billion in Sales
Headline results of the 2019 Census of Horticultural Specialties, first run in 1889.
View source
US Forest Service2014
Tree and forest effects on air quality and human health in the United States
National estimate of pollution removed by trees, and how small the resulting change is.
View source
American Society for Horticultural Science2016-08
Developing a National Strategic Plan for Consumer Horticulture
NICH's founders dating their own initiative to a July 2014 conference session.
View source
National Initiative for Consumer Horticulture2025
Who is NICH?
The organization's own history timeline, which begins in 2015.
View source
SDSU Extension
When Should I Plant My Warm-Season Vegetables?
Minimum soil temperatures crop by crop, and how frost dates are published as percentiles.
View source
Arbor Day Foundation
History of Arbor Day
Arbor Day's 1872 origin, and why state observances are scattered from January to May.
View source
History Nebraska
J. Sterling Morton creates Arbor Day
The state historical society on Arbor Day's 1872 origin, with Morton's own diary.
View source
Internet Archive2011-05
Wayback Machine capture of plant-something.org, 21 May 2011
The Arizona campaign's website as it stood in 2011, carrying no date or day.
View source
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