Hemp dogbane
Apocynum cannabinum · Apocynaceae
The gardener's calendar
Ideal time to plant hemp dogbane: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Deciduous
- Flowering
- June to August, pale pink flowers in small clusters
- Mature size
- 0.6 to 1.2 m in height
- Growth
- Fast
- Hardiness
- Very hardy, down to -30°C
- Origin
- North America
- Soil type
- Well-draining, tolerates dry and poor soils
Care
Exposure
Place the apocynum in full sun or partial shade to encourage generous flowering and a compact shape. It tolerates shadier areas but will flower less abundantly. This is an undemanding plant and very adaptable.
Watering
Once established, this plant is very tolerant of drought thanks to its deep root system. Water regularly in the first year after planting. In subsequent summers, reduce watering: a few waterings during prolonged dry spells are more than sufficient.
Soil
Apocynum prefers well-draining soils and tolerates even poor, sandy or rocky terrain. Avoid constantly wet soils that may encourage root rot. Adding compost at planting time can enrich the initial soil.
Pruning and maintenance
Little pruning is needed: prune lightly in spring to maintain a compact shape. Remove dead or damaged stems at the end of winter. This plant naturally grows as a shrub and requires no complex interventions.
Fertilization
Apocynum is not demanding and requires no regular feeding, especially in enriched soil. A light application of well-decomposed compost in spring is usually enough to support its growth. In very poor soils, balanced fertilizer can be applied moderately.
Health and pests
Very hardy and resistant to common diseases, this plant withstands pest attacks and fungal infections well. Excess moisture remains its main enemy. Ensure proper drainage and good air circulation around the stems.
Did you know?
The hemp dogbane owes its scientific name 'cannabinum' to its leaves resembling those of hemp, hence its name. North American indigenous peoples traditionally used its fibrous stems to make cordage and textile fibers, making it an important utilitarian plant long before its adoption as an ornamental in Europe.
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
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- AmatunguluCarissa macrocarpa
Tips generated and checked by Viridia — adapt them to your local climate.