Water
Keep the soil consistently moist but not waterlogged. Water deeply when the top 2-3 cm of soil feels dry. Avoid allowing the plant to completely dry out, especially during hot, dry periods.
Reduce watering in winter when growth slows.
Also known as Bigflower Selfheal · Large Self-Heal · Large Selfheal
Large-Flowered Selfheal (Prunella grandiflora) is a perennial herb producing attractive spikes of violet-blue flowers, ideal for borders and rock gardens.
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 sunlight, but can tolerate afternoon shade in hotter climates.
Consistent Moisture
50% intensity
Prefers evenly moist soil, but tolerates some dryness once established.
Well-drained
50% intensity
Hardy
25% intensity
Tolerates a wide range of temperatures, hardy in USDA zones 4-8. Protect from extreme heat.
Low Feed
25% intensity
Benefit from a single application of balanced fertilizer in spring. Over-fertilizing can reduce flowering.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
Non-toxic
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Keep the soil consistently moist but not waterlogged. Water deeply when the top 2-3 cm of soil feels dry. Avoid allowing the plant to completely dry out, especially during hot, dry periods.
Reduce watering in winter when growth slows.
Deadhead spent flowers to encourage further blooming and maintain a tidy appearance. Cut back the plant by about one-third after the main flowering period in late summer or early autumn to promote a dense, compact habit and improve winter hardiness.
Easily propagated from seed sown in autumn or early spring. Division of established clumps in early spring or autumn is also effective.
Softwood cuttings can be taken in late spring or early summer and rooted in moist, well-draining medium.
Generally not a heavy feeder and doesn't require frequent repotting. If grown in containers, repot every 2-3 years in early spring into slightly larger pots with fresh, well-draining potting mix to refresh the soil and provide more space.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Large-Flowered Selfheal (Prunella grandiflora)
Where Large-Flowered Selfheal (Prunella grandiflora) 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 | Prunella |
| Species | Prunella grandiflora |
Similar in genus Prunella
Answers based on plant encyclopedia data
