Clematis

Clematis

Clematis

Plant out 4 weeks before your last spring frost. Space plants 24 in (61 cm) apart.

Photo: Jolly Janner, 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 Spring Transplant

From a plantRecommended
  1. Plant out4 weeks before your last spring frost
  2. First harvestthe first crop about 2 years after planting

Optimal Fall Transplant

From a plant
  1. Plant out6 weeks before your first fall frost
  2. First harvestthe first crop about 2 years after planting

Growing clematis

Spacing in the row
24 in (61 cm)
Between rows
36 in (91 cm)
Planting depth
Set the crown 1-4 inches below the soil, deeper than it sat in the pot; large-flowered hybrids go deepest
Sun
Full Sun
Years to first crop
2
Mature height
Vining
Hardy to
USDA zone 4
Life cycle
Perennial

Feeding

How often
Once a year, in early spring. Use a balanced or low-nitrogen feed; spring-blooming types (pruning groups 1 and 2) can instead be fed right after their first bloom, and do not feed while in bud or bloom.

Your clematis, 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 clematis to your planting calendar →

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