Hello, I have a mature wisteria with several limbs coming off it. I've grown it over a pergola where the old wood is. I've encouraged it to grow in another direction and it is doing well, blossoms well for the last 2 years. The main limb is about 4 inches thick at the base growing over pergola, and the limb in the other direction is 1 inch.
Question: How do I discourage growth over pergola and encourage more growth in the other direction without harming it?
Your thoughts would be appreciated, many thanks, Andy.
- 13 Jul, 2012