When to Plant Snapdragons
Cool-season annual with tall spikes of hinged flowers that 'snap' open when squeezed. Excellent cut flower.
The Short Answer
How to Grow Snapdragons
Snapdragons are cool-season annuals with a fun trick — squeeze the sides of the flower and the 'mouth' opens and closes, delighting children and adults alike. They're excellent cut flowers, lasting 7-10 days in a vase. Pinch the first flower spike to encourage branching and more stems. Tall varieties (Rocket series) need staking; dwarf varieties (Montego, Snapshot) work in borders and containers. In mild-winter areas (zones 7+), snapdragons planted in fall overwinter and produce the earliest spring blooms. They often self-sow, returning as welcome volunteers in subsequent years.
Starting Seeds Indoors
Begin snapdragons seeds indoors 8 weeks before your average last frost date. Seeds need soil temperatures of at least 50°F to germinate, which typically takes 10-14 days. Provide 12 hours of light per day using a south-facing window or grow lights.
Transplanting
Move seedlings outside 2 weeks before your last frost date, once soil temperatures reach 50°F. Harden off seedlings for 7 days before transplanting by gradually exposing them to outdoor conditions.
Fall Planting
Snapdragons are planted in fall, 8 weeks before your average first frost date. , 9" apart.
Growing Tips
Pinch first flower spike to encourage branching and more blooms. Cool-weather lovers — they stall in summer heat but often rebloom in fall. Excellent cut flowers lasting 7-10 days in a vase.
Companion Planting
Good companions:
Snapdragons Planting Dates by State
Click your state for snapdragons planting dates specific to your location:
Last reviewed: March 29, 2026