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Clematis

Use our zone-based planting guide to know when to plant clematis.

Plant name Zone Start seeds indoors (spring/fall) Start seeds outdoors (spring/fall) Plant seedlings/transplants outdoors (spring/fall) Plant spacing # plants per person
Clematis 3a Not recommended Not recommended Not recommended Not recommended n/a
Clematis 3b Not recommended Not recommended Not recommended Not recommended n/a
Clematis 4a Not recommended Not recommended April 15-July 15 2-3 feet n/a
Clematis 4b Not recommended Not recommended April 15-July 15 2-3 feet n/a
Clematis 5a Not recommended Not recommended April 15-June 1 2-3 feet n/a
Clematis 5b Not recommended Not recommended April 15-June 1 2-3 feet n/a
Clematis 6a Not recommended Not recommended March 15-June 15 2-3 feet n/a
Clematis 6b Not recommended Not recommended March 15-June 15 2-3 feet n/a
Clematis 7a Not recommended Not recommended March 15-June 1 2-3 feet n/a
Clematis 7b Not recommended Not recommended March 15-June 1 2-3 feet n/a
Clematis 8a Not recommended Not recommended Feb. 15-May 15 2-3 feet n/a
Clematis 8b Not recommended Not recommended Feb. 15-May 15 2-3 feet n/a
Clematis 9a Not recommended Not recommended Jan. 15-April 15 2-3 feet n/a
Clematis 9b Not recommended Not recommended Jan. 15-April 15 2-3 feet n/a
Clematis 10a Not recommended Not recommended Not recommended Not recommended n/a
Clematis 10b Not recommended Not recommended Not recommended Not recommended n/a
Clematis 11a Not recommended Not recommended Not recommended Not recommended n/a
Clematis 11b Not recommended Not recommended Not recommended Not recommended n/a

* There are many varieties available; consult your local Extension office for one that will work well for your area. Clematis seeds can take multiple years to germinate, so start with an existing plant.