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Snapdragons are a popular annual flower that brings lots of color to the garden in late spring. Learn how to grow snapdragons from seed!

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FAQs about Snapdragons

Are snapdragons a perennial or annual? In most growing zones, snapdragons are an annual. However, there are some varieties that can be grown as a short-lived perennial in warmer climates.

FAQs about Snapdragons

When do snapdragons bloom? Snapdragons typically bloom in May or June, depending on your climate.

FAQs about Snapdragons

Are snapdragons poisonous? No, snapdragons are not poisonous or toxic to people or animals. In fact, the blooms are edible!

How to start snapdragons from seeds

Starting seeds indoors

In colder regions, you should start snapdragon seeds 8-10 weeks before your last average frost date to give your plants plenty of time to grow before the ground thaws.

Snapdragons seeds are tiny black balls that are difficult to handle individually. I like to pour out the packet into a small bowl, then stick a few to my finger to sprinkle in each cell of the seed tray.

Plant the seeds

Snapdragon seeds need light to germinate, so just sprinkle a few seeds per cell on top of the soil.

Light and temperature

The optimum temperature for snapdragon seed germination is 55 to 70°F, so you do not need to use a heat mat under the seed tray. I keep my grow light shelves in the basement where it stays in the low 60s.


Water the seeds with a fine mist to avoid disturbing them on the soil’s surface. Cover the tray with plastic wrap or a humidity dome to keep the soil moist until the seeds sprout.

Transplanting seedlings

Harden off your snapdragon seedlings for a week when temperatures are reliably above 50 degrees during the day before planting them in the garden.

Learn more about growing snapdragons by clicking the link below!