Also known as Star Violet
Houstonia pusilla, the tiny bluet, is a delicate native wildflower found in sandy or rocky soils across the southeastern United States. Its small size and ephemeral bloom
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun to Partial Shade
75% intensity
Prefers at least 6 hours of direct sunlight daily, but can tolerate light shade, especially in hotter climates.
Consistent Moisture
50% intensity
Keep soil moist but not waterlogged. Allow top layer to dry slightly between waterings.
Loam, Sand, Clay
50% intensity
Cool to Moderate
50% intensity
Prefers temperatures between 15-24°C. Can tolerate light frost once established.
Low Feed
25% intensity
Generally requires minimal fertilizer. A light, balanced feed in spring is usually adequate.
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
Tiny bluets prefer consistently moist soil, especially during their active growing season. Water regularly, allowing the top centimeter of soil to dry slightly between waterings.
Avoid waterlogged conditions, which can lead to root rot. Reduce watering in cooler months when growth slows.
Pruning is minimal for Houstonia pusilla. Deadheading spent flowers can encourage further blooming and maintain a tidy appearance.
If plants become leggy or overcrowded, a light trim after flowering can help maintain their compact form and encourage denser growth.
Propagation is best achieved through seeds sown in autumn or early spring. Alternatively, divisions can be made in early spring. The tiny seeds can be scattered on the soil surface and gently pressed in.
Germination typically occurs within 4-6 weeks under cool, moist conditions.
Repotting is rarely necessary for tiny bluets, as they are short-lived perennials or biennials.
If grown in containers, repot only if the plant becomes severely root-bound, ideally in early spring before new growth begins. Use a well-draining potting mix.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Tiny Bluet (Houstonia pusilla)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Gentianales |
| Family | Rubiaceae |
| Genus | Houstonia |
| Species | Houstonia pusilla |
Similar in genus Houstonia
Answers based on plant encyclopedia data
