Flower Garden · Seed to Bloom

How to grow clarkia

Grow Clarkia amoena for silky lavender, shell pink, salmon, rose, red, and white blooms on cool-season branching cutting stems.

Sow for cool conditionsCover seed barelyCut when lower buds open
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Botanical illustration of multicolor Clarkia amoena flowers
Botanical nameClarkia amoenaGodetia
Sow depth1/16 inchCover barely
Germination7–14 daysCool conditions
Spacing9–12 inchesBranching stems
BloomAbout 75–80 daysVariety dependent

Flower profile

Grow satin-textured blooms before summer heat.

Clarkia amoena, often called godetia, is a cool-season annual with branching stems and silky cupped flowers. Grace types are selected for cutting, while Dwarf Godetia makes a lower informal display.

Do not overheat the cropClarkia performs best in cool spring conditions. Sow early and avoid delaying transplants into hot weather.

clarkia at a glance

From seed to a productive flower display

01SowEarly cool season02Sprout7–14 days03Thin9–12 inches04BranchMultiple stems05BudCool bright growth06CutLower flowers open

Planting

Sow shallowly in cool soil.

Direct sow where possible, or start carefully in cells without letting roots become bound.

01

Cover about 1/16 inch

Keep fine seed close to the surface and maintain gentle moisture.

02

Thin for branching

Leave 9–12 inches so plants develop lateral flowering stems.

03

Support cutting rows

Install netting early for tall Grace selections in exposed sites.

Ongoing care

Keep plants healthy and flowers productive

Give full sun in cool weather

Bright light produces strong stems and abundant flowers.

Water evenly

Avoid drought during stem extension and bud development.

Keep fertility moderate

Rich nitrogen encourages soft lodging growth.

Cut before heat decline

Harvest promptly as the first flowers open.

Season checkpoints

Follow the plant’s visible progress.

7–14 days

Seedlings emerge

4–6 weeks

Branches develop

75–80 days

First blooms open

With summer heat

Quality may decline

Cutting and display

Cut when lower flowers begin opening.

Harvest when one or two lower blooms are open and upper buds show color. Strip submerged foliage and condition in clean cool water.

  1. Cut in the cool morning.
  2. Harvest above a branching node.
  3. Recut stems before arranging.

Urban Farmer selections

Choose a Clarkia palette and habit

Grace Mix product imageCut flower · mixed colorsGrace MixA uniform blend of silky colors on branching bouquet stems.Checking availability…Shop Grace Mix →Grace Lavender product imageCut flower · lavenderGrace LavenderSoft lavender blooms on uniform stems for cool-toned arrangements.Checking availability…Shop Grace Lavender →Dwarf Godetia product imageCompact · pink mixDwarf GodetiaCheerful pink cupped flowers for smaller beds and informal borders.Checking availability…Shop Dwarf Godetia →

Questions flower gardeners ask

Clarkia growing FAQ

When should Clarkia be sown?

Sow in early spring while conditions remain cool.

How deep should seed be planted?

Cover only about 1/16 inch.

How long does germination take?

Expect seedlings in roughly 7–14 days.

How far apart should plants be?

Thin to about 9–12 inches.

Does Clarkia like hot weather?

No. It performs best in cool spring conditions and may decline in summer heat.

Can it be direct sown?

Yes, direct sowing is often the simplest method.

Do tall types need support?

Grace cutting rows can benefit from early netting.

Should Clarkia be pinched?

Pinching can encourage branching, but test against the selected cutting schedule.

When should stems be harvested?

Cut when one or two lower flowers open and upper buds show color.

Is godetia the same as Clarkia?

Godetia is a common name used for Clarkia amoena.

Ready to plant?

Fill the cool-season cutting row with silky color.

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