Troubleshooting
Grey Speedwell problems — and how to fix them
Grey Speedwell (Veronica cinerea) 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.
Root rot in wet soils
The single most common cause of death. Plant in raised beds or on slopes; mix at least 50% coarse grit into the planting hole to ensure rapid drainage.
Loss of silver foliage colour
Indicates too much shade or over-fertilisation. Reposition in full sun and reduce feeding; the tomentum recovers as new growth emerges.
Aphid infestations in spring
Young shoots can be attacked by aphids. Treat with a strong water jet or insecticidal soap; natural predators usually control populations without intervention.
Prevent grey speedwell problems before they start
Most grey speedwell issues are care-mismatch, not bad luck. Dial in the basics:
Grey Speedwell problems — FAQ
Why is my grey speedwell root rot in wet soils?
The single most common cause of death. Plant in raised beds or on slopes; mix at least 50% coarse grit into the planting hole to ensure rapid drainage.
Why is my grey speedwell loss of silver foliage colour?
Indicates too much shade or over-fertilisation. Reposition in full sun and reduce feeding; the tomentum recovers as new growth emerges.
Why is my grey speedwell aphid infestations in spring?
Young shoots can be attacked by aphids. Treat with a strong water jet or insecticidal soap; natural predators usually control populations without intervention.