Rosemary

Rosemary

Salvia rosmarinus

Start rosemary indoors 8 weeks before your last spring frost, then plant out 2 weeks after your last spring frost. Space plants 24 in (61 cm) apart.

Photo: THOR, CC BY 2.0 · 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 indoors8 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 harvestcontinuous, once established

Optimal Transplant

From seed
  1. Plant out2 weeks after your last spring frost
  2. First harvestcontinuous, once established

Growing rosemary

Spacing in the row
24 in (61 cm)
Between rows
36 in (91 cm)
Planting depth
1/8 - 1/4 inch
Sun
Full Sun
Soil
Well-drained, sandy loam
Germination
14-21 days at 65-75°F
Harvest season
Continuous
Mature height
24-72 inches
Hardy to
USDA zone 7
Life cycle
Perennial

Sow shallowly, requiring light for germination, and maintain consistent moisture for best results.

Watering. Allow soil to dry slightly between waterings; avoid overwatering. Drought tolerant once established.

Neighbours

The companion chart →

Grows well beside

Keep apart from

Feeding

Seedlings
Light liquid feed once true leaves appear.
Growing
Light feeding during active growth (spring/early summer).
Flowering and fruiting
Continue light feeding, avoiding high nitrogen.
How often
Every 4-6 weeks during growing season.
Note
Avoid over-fertilizing, especially with high-nitrogen, which can reduce oil production and vigor.

Your rosemary, 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 rosemary to your planting calendar →

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