How to grow Snapdragons

How to grow Snapdragons

Snapdragon (Antirrhinum majus)

Snapdragons are among the most productive and enduring flowers of the spring and summer seasons. Their vivacious growth and sweet fragrance add a delightful touch to any garden. Moreover, they are a popular attraction for bees and hummingbirds alike.

Snapdragons are very responsive to day-length, light intensity, and temperature. They have been classified into 4 growing groups.

Group 1 -2 (Early Spring and Fall blooming): ‘Costa’ and ‘Chantillity’

Group 3-4 (Mid Season / Summer blooming): ‘ Potomac’ and ‘Rocket’

All season: ‘Madame Butterfly’


Plant type: annual

Height: 30-36”

Site: full sun 

Days to maturity: 110-120 days

Plant spacing: 9-12”

Pinch: when 4-5” tall

How to Grow: 

Transplant (recommended): Start seed indoors 8-10 weeks before last frost. Sprinkle with a  fine layer of vermiculite but do not cover seeds as light is required for germination. Bottom water to avoid displacing the tiny seeds.  Transplant outside once the danger of frost has passed.

Germination: 7-14 days at 70-75°F

Where to plant: Plant in a sunny to part-shade location. Rich, well-drained, moist soil is preferred.

Harvesting/Vase Life:

Snapdragons should be harvested early, before they can be pollinated by insects, when just the bottom 2-3 flowers are open. Expected vase life is 7-10 days and flower food is recommended.

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