Also known as Blue Boneset · Mistflower · Perennial Ageratum
Blue Mistflower (Conoclinium coelestinum) is a charming native perennial, forming airy clusters of lavender-blue, daisy-like flowers that attract pollinators from late su
At-a-glance light, water, soil, and growing conditions from plant data
Full sun to partial shade
75% intensity
Blooms best with at least 6 hours of direct sun
Regularly keep soil moist
75% intensity
Avoid waterlogging
Well-drained
50% intensity
Prefers moderate temperatures
50% intensity
Hardy in USDA zones 4-9, tolerates heat
Light feeding
25% intensity
Apply balanced fertilizer in spring, optional in mid-summer
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
| Edible | No |
Non-toxic
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Blue Mistflower thrives in consistently moist soil. Water regularly, especially during dry periods, ensuring the soil does not completely dry out. Reduce watering slightly in winter when the plant's growth slows.
Overwatering can lead to root rot, so good drainage is essential.
To encourage bushier growth and continuous blooming, deadhead spent flowers regularly. In late spring or early summer, you can also cut back plants that have become leggy to promote a more compact form.
A harder prune in late winter or early spring can rejuvenate old plants.
Blue Mistflower is easily propagated by division in early spring or from stem cuttings taken in late spring or early summer. Cuttings can be rooted in moist potting mix.
Divisions should be replanted immediately, ensuring they are kept well-watered until established.
Repotting is generally only necessary for container-grown plants. If the roots are circling the pot or have filled it entirely, it's time to repot. This is best done in early spring before new growth begins.
Use a good quality potting mix with excellent drainage.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Blue Mistflower (Conoclinium coelestinum)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Conoclinium |
| Species | Conoclinium coelestinum |
Similar in genus Conoclinium
Answers based on plant encyclopedia data
