Also known as Scrambling-Gromwell · Shrubby-Gromwell
Purple gromwell (Glandora diffusa) is a low-growing perennial with vibrant purple-blue flowers that bloom from late spring to early summer, creating a carpet of color.
At-a-glance light, water, soil, and growing conditions from plant data
Full sun to partial shade
75% intensity
Prefers full sun for best flowering, but tolerates partial shade. Avoid deep shade.
Moderate
50% intensity
Keep soil consistently moist but well-drained. Allow topsoil to dry slightly between waterings once established.
Well-drained
50% intensity
Moderate
50% intensity
Prefers average room temperatures, generally between 15-24°C. Can tolerate cooler temperatures outdoors.
Low
25% intensity
Does not require frequent feeding. A light feed in spring is usually sufficient.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
| Edible | No |
None
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Purple gromwell prefers consistently moist soil during its active growth period, especially in its first year. Once established, it can tolerate short periods of drought.
Water deeply when the top 2-3 cm of soil feels dry. Avoid waterlogging, which can lead to root rot.
Prune purple gromwell after flowering to maintain a tidy appearance and encourage bushier growth. Remove any dead, damaged, or weak stems.
Cutting back lightly after the main flowering period can prolong the blooming season and prevent the plant from becoming leggy.
Purple gromwell can be propagated by seed sown in autumn or early spring, or by division of established clumps in early spring. Softwood cuttings can also be taken in late spring or early summer.
Ensure cuttings are placed in well-draining soil and kept moist.
Repotting is typically not necessary for purple gromwell unless it is container-grown and has become root-bound. If repotting, do so in early spring before new growth begins.
Use a well-draining potting mix and a pot that is 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 Purple Gromwell (Glandora diffusa)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Boraginales |
| Family | Boraginaceae |
| Genus | Glandora |
| Species | Glandora diffusa |
Similar in genus Glandora
Answers based on plant encyclopedia data
