Can poinsettias grow outside year-round?

Only where winters stay mild. NC State Extension’s plant toolbox rates poinsettia winter hardy in USDA zones 9 to 11, and UF/IFAS says even in Florida it must be protected from frost and freezes. In colder zones it can spend the summer outside in its pot.

When can I put my poinsettia outside?

After your last spring frost. UF/IFAS plants saved poinsettias out after the last frost; Iowa State moves pots out in late May after hardening them off; NC State Extension in Clay County waits for late May, after the last frost. The table on this page gives each zone’s NOAA freeze dates.

How big do poinsettias get in the ground?

NC State says the plant grows up to 10 feet tall and 8 feet wide in its native habitat, far larger than a pot plant’s 2 to 3 feet. UF/IFAS pinches it back several times in summer to keep it full.

Will a poinsettia planted outside turn red?

It needs long, dark nights in fall, as indoors. UF/IFAS warns that light from artificial sources at night in fall can delay or completely prevent flowering, so plant it away from porch lights and streetlights.

Guides

Growing Poinsettias Outdoors by Zone (Zones 9–11)

In the warmest parts of the country a poinsettia can live in the garden and grow into a shrub. Everywhere else it can spend the summer outside in its pot. Here is where each applies, and when the pot goes out and comes back in for your zone.

Published November 2, 2026 · Cite this page

Where a poinsettia lives outdoors all year

NC State Extension’s plant toolbox rates the poinsettia winter hardy in USDA zones 9 to 11, and says that in warm climates it can be planted outdoors as a garden accent or kept as a container plant, while in cooler climates it is best used as a florist plant and grown outdoors in summer. That zone range is the toolbox’s judgement, not a measurement: the zone is measured, the rating is an opinion about the plant.

Even in zones 9 to 11, frost is the limit. UF/IFAS Gardening Solutions calls the poinsettia a tropical plant that must be protected from frost and freezing weather, and University of Minnesota Extension says freezing temperatures kill it. So a rating of zone 9 or 10 is not a promise against a hard winter: the table below gives those zones’ freeze dates, and the poinsettia care page rates every half zone from 3 to 11.

Planting one in the ground (zones 9 to 11)

Wait for the last frost. UF/IFAS plants a saved holiday poinsettia in the landscape after the last frost, and prunes off the faded bracts at the same time.
Give it sun. UF/IFAS picks a spot with full sun for most of the day; NC State gives an outdoor plant 4 to 5 hours of sun a day.
Give it good soil. UF/IFAS says poinsettias grow best in moist, well-drained, fertile soil.
Feed and pinch through summer. NC State starts fertilizing in spring and prunes or pinches through the summer; UF/IFAS pinches several times to make a full plant with many flower heads.
Keep the nights dark in fall. UF/IFAS says artificial light at night in fall can delay or prevent flowering, so a spot away from porch lights and streetlights is the one that colors.

NC State says the plant can reach 10 feet tall and 8 feet wide in its native habitat, so leave it room.

Freeze dates and outdoor timing, by zone

Each zone’s median last spring freeze, the cold-year date NOAA says is passed in 9 years out of 10, and the median and cold-year first fall freeze, from the median station. Beside them, what the extension services in states with ZIP codes in that zone say about moving a poinsettia outside.

Zone	Last spring freeze, median	Last spring freeze, cold year	First fall freeze, median	First fall freeze, cold year	What sources for states in this zone say
Zone 3	May 19	June 1	September 22	September 7	University of Minnesota (Minnesota): outside around Father’s Day in indirect light, into full sun around the Fourth of July, back indoors at Labor Day
Zone 4	May 13	May 27	September 28	September 15	Iowa State University (Iowa): outdoors in late May after 7 to 10 days of hardening off; sink the pot where it gets 6 to 8 hours of sun; back indoors by mid-September University of Minnesota (Minnesota): outside around Father’s Day in indirect light, into full sun around the Fourth of July, back indoors at Labor Day
Zone 5	May 6	May 20	October 5	September 22	Iowa State University (Iowa): outdoors in late May after 7 to 10 days of hardening off; sink the pot where it gets 6 to 8 hours of sun; back indoors by mid-September University of Minnesota (Minnesota): outside around Father’s Day in indirect light, into full sun around the Fourth of July, back indoors at Labor Day New Mexico State University (Southwest Yard and Garden) (New Mexico): outside once there is no chance of freezing, sheltered from midday and afternoon sun and from spring winds
Zone 6	April 28	May 13	October 17	October 2	Texas A&M AgriLife (Texas A&M Stories) (Texas): a kept plant goes to a shady spot outdoors once the weather stays warm, and comes inside after the fall equinox for its dark nights Iowa State University (Iowa): outdoors in late May after 7 to 10 days of hardening off; sink the pot where it gets 6 to 8 hours of sun; back indoors by mid-September New Mexico State University (Southwest Yard and Garden) (New Mexico): outside once there is no chance of freezing, sheltered from midday and afternoon sun and from spring winds
Zone 7	April 14	April 30	October 26	October 12	Texas A&M AgriLife (Texas A&M Stories) (Texas): a kept plant goes to a shady spot outdoors once the weather stays warm, and comes inside after the fall equinox for its dark nights NC State (Clay County, North Carolina): outdoors in partial shade from late May, after the last frost, through September New Mexico State University (Southwest Yard and Garden) (New Mexico): outside once there is no chance of freezing, sheltered from midday and afternoon sun and from spring winds
Zone 8	March 26	April 13	November 9	October 26	UF/IFAS (Florida): plant a saved poinsettia in the landscape after the last frost, in full sun for most of the day; pinch it back several times over summer; protect it from frost and freezes Texas A&M AgriLife (Texas A&M Stories) (Texas): a kept plant goes to a shady spot outdoors once the weather stays warm, and comes inside after the fall equinox for its dark nights New Mexico State University (Southwest Yard and Garden) (New Mexico): outside once there is no chance of freezing, sheltered from midday and afternoon sun and from spring winds
Zone 9	February 25	March 21	December 1	November 11	UF/IFAS (Florida): plant a saved poinsettia in the landscape after the last frost, in full sun for most of the day; pinch it back several times over summer; protect it from frost and freezes Texas A&M AgriLife (Texas A&M Stories) (Texas): a kept plant goes to a shady spot outdoors once the weather stays warm, and comes inside after the fall equinox for its dark nights
Zone 10	January 18	February 18	January 1	December 9	UF/IFAS (Florida): plant a saved poinsettia in the landscape after the last frost, in full sun for most of the day; pinch it back several times over summer; protect it from frost and freezes Texas A&M AgriLife (Texas A&M Stories) (Texas): a kept plant goes to a shady spot outdoors once the weather stays warm, and comes inside after the fall equinox for its dark nights

⚠️ A state spans several zones, and a zone spans many states. A rule shows in every zone its state has ZIP codes in, so read it with the state it was written for. The freeze dates are from the median NOAA station in each zone. Most of these sources time the move by the season (late May, Father’s Day, Labor Day) rather than by a date; UF/IFAS and NC State in Clay County tie it to the last frost. The cold-year last spring freeze is the safe day to set a pot out, and the median first fall freeze is the latest it should stay.

Zone 11 is not in this table: too few stations there record a freeze to give a date. For zone 11, and for every zone half by half, see the table on the poinsettia care page.

Your ZIP code

Your ZIP, your answer

Enter your ZIP code to see your USDA zone, each zone’s freeze dates and when the sources there move a poinsettia outdoors, read from the table on this page, and the freeze dates of the NOAA station nearest you.

This box needs JavaScript to answer on the page. Without it, the button opens the ZIP code zone finder; your zone’s row is in the table on this page.

Your answer appears here.

Full details for any ZIP code: ZIP code zone finder.

Summering a pot outside (every zone)

In colder zones the pot goes out for the summer and comes back in. The extension calendars line up closely:

Iowa State: in late May, set the pot in a shady, sheltered spot for 2 or 3 days, then give it longer spells of direct sun until it is used to it, which takes 7 to 10 days. Then sink the pot in the ground where it gets 6 to 8 hours of sun, and keep watering and feeding. Bring it in by mid-September.
Minnesota: out around Father’s Day in indirect light, into full sun around the Fourth of July with more water and fertilizer, and back indoors at Labor Day to a spot with at least six hours of direct light.
NC State, Clay County: outdoors once the weather is reliably warm, usually late May after the last frost, through September, in partial shade with regular water and feeding.
New Mexico State: outside when there is no chance of freezing, protected from direct sun at midday and in the afternoon, sheltered from spring winds, and never left to dry out.

The fall move indoors is also the start of the dark nights that bring back the color; the after-Christmas guide has the extension calendars for those.

Supplies

Supplies the sources mention

Each link opens an Amazon search for a plain kind of product, not one we picked. We have not tested these, and we do not rank them.

As an Amazon Associate I earn from qualifying purchases. It costs you nothing extra and changes nothing on this page: the dates are NOAA’s and the advice is the extension services’. Affiliate disclosure

Frost clothUF/IFAS says poinsettias in the landscape are tropical plants that must be protected from frost and freezing weather.

Common mistakes

Planting out before the last frost. UF/IFAS waits for it; the table gives your zone’s cold-year date.
Moving a pot straight into full sun. Iowa State hardens it off over 7 to 10 days first.
Leaving a pot out too late. Iowa State brings it in by mid-September; Minnesota says freezing kills it.
A planting spot under a porch light. UF/IFAS says light at night in fall can stop it flowering.

We found no Clemson, LSU AgCenter or University of California source on growing poinsettias outdoors that we could read, so Gulf Coast and California gardeners should check with their own extension office.

Questions

Can poinsettias grow outside year-round?: Only where winters stay mild. NC State Extension’s plant toolbox rates poinsettia winter hardy in USDA zones 9 to 11, and UF/IFAS says even in Florida it must be protected from frost and freezes. In colder zones it can spend the summer outside in its pot.
When can I put my poinsettia outside?: After your last spring frost. UF/IFAS plants saved poinsettias out after the last frost; Iowa State moves pots out in late May after hardening them off; NC State Extension in Clay County waits for late May, after the last frost. The table on this page gives each zone’s NOAA freeze dates.
How big do poinsettias get in the ground?: NC State says the plant grows up to 10 feet tall and 8 feet wide in its native habitat, far larger than a pot plant’s 2 to 3 feet. UF/IFAS pinches it back several times in summer to keep it full.
Will a poinsettia planted outside turn red?: It needs long, dark nights in fall, as indoors. UF/IFAS warns that light from artificial sources at night in fall can delay or completely prevent flowering, so plant it away from porch lights and streetlights.

Sources

Dates on this page are computed when the site is built from NOAA's 1991–2020 Climate Normals (first fall freeze at 32 °F, for every station the ZIP codes in each zone cite). Zones are the USDA Plant Hardiness Zone Map, 2023. Every rule — how long before or after a freeze to plant, how deep, how much — is quoted from the extension publications below, each of which writes for its own area.

NC State Extension Gardener Plant Toolbox, Euphorbia pulcherrima (poinsettia) . Written for: North Carolina (USDA zones 6b–9a).
UF/IFAS Gardening Solutions, Poinsettia (Accessed October 2026). Written for: Florida (USDA zones 8b–11b).
Texas A&M AgriLife (Texas A&M Stories), Setting Your Poinsettias Up For Success , by Katharine Cook (Dec. 4, 2023). Written for: Texas (USDA zones 6b–10b).
NC State Extension, Clay County Center, How to Care for Poinsettias: A Guide to Keeping Your Holiday Plant Healthy , by Tyler Osborn (December 10, 2024). Written for: Clay County, North Carolina (USDA zone 7b).
Iowa State University Extension and Outreach, Guide to Selection and Care of Poinsettias . Written for: Iowa (USDA zones 4b–6a).
University of Minnesota Extension, Poinsettia , by Julie Weisenhorn (Reviewed 2026). Written for: Minnesota (USDA zones 3a–5a).
New Mexico State University Extension (Southwest Yard and Garden), Helping poinsettia recover after flowering (January 20, 2008). Written for: New Mexico (USDA zones 5a–8b).

Nothing here replaces your own state's cooperative extension service, which knows your county. Where this site's numbers come from.

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