Troubleshooting
Goldmoss Stonecrop problems — and how to fix them
Goldmoss Stonecrop (Sedum acre) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Invasive spreading
Sedum acre can spread aggressively and is considered invasive in parts of North America. In garden beds, install root barriers or plant in contained troughs. Remove self-seeded patches promptly if you do not want it to colonise surrounding areas.
Rot in winter wet (container culture)
Prolonged waterlogging in winter causes mat sections to blacken and die off. In containers, raise the pot on feet for drainage and use a very lean, gritty compost. Outdoor ground planting on a slope or raised bed largely avoids this.
Aphid attack on new growth
New spring growth and flower stems can attract aphid colonies. Blast off with water or treat with a fatty-acid insecticidal soap. The problem is usually transient as populations build slowly on such small foliage.
Prevent goldmoss stonecrop problems before they start
Most goldmoss stonecrop issues are care-mismatch, not bad luck. Dial in the basics:
Looking for goldmoss stonecrop in general rather than its problems? Read the full goldmoss stonecrop care guide — light, water, soil and feeding.
Goldmoss Stonecrop problems — FAQ
Why is my goldmoss stonecrop invasive spreading?
Sedum acre can spread aggressively and is considered invasive in parts of North America. In garden beds, install root barriers or plant in contained troughs. Remove self-seeded patches promptly if you do not want it to colonise surrounding areas.
Why is my goldmoss stonecrop rot in winter wet (container culture)?
Prolonged waterlogging in winter causes mat sections to blacken and die off. In containers, raise the pot on feet for drainage and use a very lean, gritty compost. Outdoor ground planting on a slope or raised bed largely avoids this.
Why is my goldmoss stonecrop aphid attack on new growth?
New spring growth and flower stems can attract aphid colonies. Blast off with water or treat with a fatty-acid insecticidal soap. The problem is usually transient as populations build slowly on such small foliage.