Basil

Basil

Ocimum basilicum

Start basil indoors 4 weeks before your last spring frost, then plant out 2 weeks after your last spring frost. Space plants 10 in (25 cm) apart.

Photo: Forest and Kim Starr, CC BY 3.0 us · 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 Indoor Start

From seedRecommended
  1. Start indoors4 weeks before your last spring frost
  2. Begin hardening off1 week after your last spring frost
  3. Plant out2 weeks after your last spring frost
  4. First harvestabout 68 days after planting out

Optimal Transplant

From seed
  1. Plant out2 weeks after your last spring frost
  2. First harvestabout 42 days after planting out

Optimal Direct Sow

From seed
  1. Sow outdoors2 weeks after your last spring frost
  2. First harvestabout 68 days after sowing

Growing basil

Spacing in the row
10 in (25 cm)
Between rows
18 in (46 cm)
Planting depth
1/8-1/4 inch
Sun
Full Sun
Mature height
18-24 in
Life cycle
Annual

Warm-season; pinch tops to keep bushy. Frost-tender.

Feeding

How often
Every 2-4 weeks during active growth. Use a light, half-strength balanced or liquid feed; heavy feeding makes big plants with weaker flavour, and pots in full sun need the shorter interval.

Your basil, 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 basil to your planting calendar →