Signet Marigold

Signet Marigold

Tagetes tenuifolia

Plant out 1 week after your last spring frost. Space plants 6 in (15 cm) apart.

Photo: Salicyna, CC BY-SA 4.0 · 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 Transplant Purchase

From a plantRecommended from a plant
  1. Plant out1 week after your last spring frost
  2. First harvestabout 50 days after planting out

Optimal Indoor Start

From seedRecommended from seed
  1. Start indoors5 weeks before your last spring frost
  2. Begin hardening offaround your last spring frost
  3. Plant out1 week after your last spring frost
  4. First harvestabout 70 days after sowing

Optimal Transplant

From seed
  1. Plant out1 week after your last spring frost
  2. First harvestabout 70 days after planting out

Optimal Direct Sow

From seed
  1. Sow outdoors1 week after your last spring frost
  2. First harvestabout 70 days after sowing

Growing signet marigold

Spacing in the row
6 in (15 cm)
Between rows
12 in (30 cm)
Planting depth
1/4 inch
Sun
Full Sun
Soil
Well-drained, average to rich loam
Germination
5-10 days at 70-75°F
Harvest season
Summer to Fall
Mature height
6-12 inches
Life cycle
Annual

Sow seeds lightly covered in moist, well-draining soil.

Watering. Keep consistently moist until established, then tolerate some drought; avoid waterlogging.

Neighbours

The companion chart →

Grows well beside

Feeding

Seedlings
Half-strength balanced liquid fertilizer after true leaves emerge.
Growing
Balanced liquid fertilizer every 4-6 weeks if soil nutrition is low.
Flowering and fruiting
Generally not required; focus on balanced nutrition during growth.
How often
Rarely: low to moderate feeding, only as needed.
Note
Avoid excessive nitrogen, which can promote foliage over flowers.

Your signet marigold, 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 signet marigold to your planting calendar →

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