Water
Water consistently, keeping the soil evenly moist but not waterlogged, especially during dry periods. Reduce watering in winter when the plant is dormant. Aim for deep watering to encourage strong root development.
Also known as Big-Flowered Foxglove · Great Yellow Foxglove · Large Yellow Foxglove
Safety note: This plant may be toxic to humans and pets. See toxicity details.
Digitalis grandiflora, or Yellow Foxglove, is a stately perennial producing tall spires of bell-shaped, creamy yellow flowers, often with brown speckles.
At-a-glance light, water, soil, and growing conditions from plant data
Partial Shade to Full Sun
50% intensity
Prefers morning sun and afternoon shade, especially in hot climates.
Moderate
50% intensity
Keep soil consistently moist but avoid waterlogging.
Well-drained, fertile soil
50% intensity
Moderate
50% intensity
Hardy in USDA zones 4-8; prefers cooler temperatures.
Low
25% intensity
Light feeding in spring with balanced fertilizer.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | Yes 5/5 intensity |
| Toxic for pets | Yes 5/5 intensity |
| Edible | No |
All parts are toxic if ingested, especially the leaves and seeds. Contains cardiac glycosides.
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water consistently, keeping the soil evenly moist but not waterlogged, especially during dry periods. Reduce watering in winter when the plant is dormant. Aim for deep watering to encourage strong root development.
Deadhead spent flower stalks to encourage further blooming and prevent self-seeding if not desired. After flowering, cut back the faded flower stalks to ground level to maintain a tidy appearance and direct energy to root growth.
Propagate by division of established clumps in early spring or autumn. Seeds can also be sown in autumn or early spring in a cold frame or directly in situ. Successful germination can take several weeks.
Repotting is generally not required for established plants grown in their preferred locations. If growing in containers, repot every 2-3 years in spring into a slightly larger pot with fresh, well-draining soil.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Yellow Foxglove (Digitalis grandiflora)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Lamiales |
| Family | Plantaginaceae |
| Genus | Digitalis |
| Species | Digitalis grandiflora |
Similar in genus Digitalis
Answers based on plant encyclopedia data
