Fascinating Fact:
Rock gardens, raised beds, and troughs are popular for alpines because they drain quickly. Even a slight slope can help water run away from the crown.
Many alpines evolved in places where water moves away rapidly, so garden design matters as much as watering. A raised bed, trough, or rock garden lifts the roots above soggy ground and lets air reach the compost, which helps prevent rot. Planting into a gritty mix and finishing with a stony top dressing can also reduce splashing mud and keep the plant base cleaner. This quiz explores how alpines fit into small spaces, how to position them for light, and how to avoid the most common problem of all, compost staying wet around the plant’s centre.
Key Terms
- Top dressing: A thin layer placed on the compost surface, often grit or small stones, to keep the base tidy and improve drainage.
- Drainage holes: Openings in a pot or trough that let extra water escape instead of pooling around roots.
- Raised bed: A planting area built higher than the surrounding ground to improve drainage and warm up sooner.
Frequently Asked Questions (Click to see answers)
What compost is best for alpines in pots?
A gritty, free-draining mix works best, such as multi-purpose compost mixed with plenty of horticultural grit, because it stops water sitting around the roots.
Why do alpines rot in winter?
Alpines often rot when compost stays cold and wet for long periods, especially around the plant’s centre, so sharp drainage and shelter from heavy rain can help.
Can I grow alpines in a trough planter?
Yes, trough planters are ideal for alpines because they drain well and show off low-growing plants, as long as the container has drainage holes and a gritty compost mix.
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