Also known as Mountain Bluecurls
Oblong bluecurls (Trichostema oblongum) is a native California perennial herb featuring whorls of blue flowers on upright stems, blooming in spring and summer.
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun to Partial Shade
75% intensity
Prefers bright light, but can tolerate some shade.
Moderate
50% intensity
Allow soil to dry slightly between waterings; reduce in winter.
Well-drained
50% intensity
Moderate
50% intensity
Prefers average room temperatures; protect from frost.
Low
25% intensity
Fertilize lightly during growing season; none in dormancy.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
None
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water oblong bluecurls moderately during the growing season, allowing the soil to dry slightly between waterings. Reduce watering significantly in winter to prevent root rot, as the plant enters dormancy.
Ensure good drainage to avoid waterlogged conditions.
Prune oblong bluecurls in late winter or early spring before new growth begins to maintain shape and encourage bushier growth. Remove any dead, damaged, or crossing branches.
Lightly trim leggy stems to promote a more compact form.
Propagate oblong bluecurls from seed sown in spring or from stem cuttings taken in late spring or early summer. Seeds may require stratification.
Cuttings should be rooted in well-draining soil, kept moist, and provided with warmth.
Repot oblong bluecurls every two to three years, or when the plant becomes root-bound. Use a well-draining potting mix. Repotting is best done in spring before active growth begins.
Choose a pot only slightly larger than the current one.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Oblong Bluecurls (Trichostema oblongum)
Where Oblong Bluecurls (Trichostema oblongum) is found
Density
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Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Lamiales |
| Family | Lamiaceae |
| Genus | Trichostema |
| Species | Trichostema oblongum |
Similar in genus Trichostema
Answers based on plant encyclopedia data
