Snapdragon

Snapdragon

Antirrhinum majus

Plant out around your last spring frost. Space plants 6 in (15 cm) apart.

Photo: Plane777 at en.wikipedia, Public domain · source

When to plant

Timed from your frost dates, so it holds wherever you garden. Give yours and every step below becomes a date.

See the dates for your garden

Enter your average last spring frost and first fall frost. Every timing on this site turns into a calendar date. Not sure of yours? Your local extension service or a search for “last frost date” and your town will tell you; the app finds them from your location.

Last spring frost
First fall frost

Saved in this browser only. Nothing is sent anywhere.

Optimal Transplant

From a plantRecommended from a plant
  1. Plant outaround your last spring frost
  2. First harvestabout 90 days after planting out

Optimal Indoor Start

From seedRecommended from seed
  1. Start indoors9 weeks before your last spring frost
  2. Begin hardening off1 week before your last spring frost
  3. Plant outaround your last spring frost
  4. First harvestabout 90 days after sowing

Optimal Direct Sow

From seed
  1. Sow outdoors6 weeks before your last spring frost
  2. First harvestabout 90 days after sowing

Growing snapdragon

Spacing in the row
6 in (15 cm)
Between rows
12 in (30 cm)
Planting depth
Surface sow; press in and cover only with a dusting of vermiculite (needs light)
Sun
Full Sun
Mature height
1-3 ft
Life cycle
Annual

Feeding

How often
Every 2-4 weeks while in bloom. Use a balanced fertilizer at label strength or weaker; too much gives leafy plants and salt damage, and a light feed after cutting back brings a second flush.

Your snapdragon, planned to the day.

Canopy turns these timings into dates from your own frost data, places every plant at its spacing on your garden map, and tracks it all the way to harvest.

Add snapdragon to your planting calendar →

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