Purple-vein geranium
Geranium wallichianum · Geraniaceae
📷 Huhu at de.wikipedia · Public domain
The gardener's calendar
Purple-vein geranium is in full bloom: enjoy it, watch watering in hot weather and let spent flowers feed pollinators before pruning.
ID card
- Foliage
- Deciduous, soft green, finely cut
- Flowering
- July to October, blue-mauve flowers with darker veins
- Mature size
- 40 cm tall, spreading and bushy habit
- Growth
- Moderate, rhizomatous
- Hardiness
- Very hardy, down to -15 °C
- Origin
- Himalayas (India, Nepal)
- Soil type
- Well-drained, rich in organic matter
- Water requirements
- Moderate, tolerant of established drought
✓ Taxonomy verifiedSource: AI estimate · hardiness: reliability medium.
Expert tips
The key tip
Partial shade, well-draining soil. Thin out old clumps in autumn (remove dead stems, divide if too dense).
The common mistake
Letting the clump get too compacted over time: it weakens, flowers less, and fungal diseases take hold.
The pro's trick
After October flowering, cut back to 10 cm: you'll force more vigorous spring growth and avoid a sprawling, ungainly plant.
Care
Watering
Water regularly during the first year after planting, especially in summer. Once established, this perennial geranium tolerates dry periods well. Avoid excess winter moisture which could cause rhizome rot.
Light
Place the plant in partial shade or a bright location without direct afternoon sun. In cool or mountain climates, it appreciates more light. A location sheltered from drying winds promotes better flowering.
Pruning and maintenance
Remove faded stems after flowering to encourage branching and extend blooming until the first frosts. In late autumn or early winter, cut stems back to ground level after the deciduous foliage disappears.
Soil and planting
Prepare well-drained soil enriched with compost or potting soil. This species dislikes waterlogged conditions. A light mulch in spring protects the crown and keeps the soil cool in summer.
Fertilizing
A balanced fertilizer application in spring is quite sufficient. You can apply again in early summer to support flowering, but avoid excess which would weaken winter hardiness.
Diseases and pests
This species is very robust and rarely affected by disease. Watch for slugs in spring which can damage young shoots. Poor winter drainage is the main risk: this is why proper soil preparation is essential.
Did you know?
Geranium wallichianum is named after Nathaniel Wallich, a British botanist who explored the Himalayas in the 19th century. This wild species from the Himalayan mountains is an excellent example of the floral richness of alpine meadows, where it flowers late in the season to make the most of the time before winter arrives.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
Add this plant to my garden →Plants from the same family
- Meadow geraniumGeranium pratense
- Bloody Crane's-billGeranium sanguineum
- Rock crane's-billGeranium macrorrhizum
- French crane's-billGeranium endressii
- Himalayan crane's-billGeranium himalayense
- Iberian geraniumGeranium ibericum
Tips generated and checked by Viridia — adapt them to your local climate.