I live in the UK, bought 8 Hebe Autumn Glory plants this summer (if you can call it a summer). Four of the plants turned out to be badly affected with black spot, and I have had to remove a lot of leaves. The other four, from a different nursery, were in better condition although have had black spot to a lesser extent but three of them have been getting targeted by bugs and I have been finding little green and black caterpillars in the new shoots. The leaves have been getting stuck together to form a little nest for the caterpillar. I've removed what I can and have been spraying the plants with neem oil (I can't use chemical pesticides due to having a pet cat) but am a bit worried that the plants might not survive a really bad winter in their weakened state. Is there any action I need to take to protect them when it starts getting colder?
- 17 Sep, 2011