Now (the winter) is a great time. The tree will be dormant and will have the best chance of survival. How big the root ball is depends on how big the tree is however the bigger the better. The less root system you disturb the better. The more roots you rip out and leave behind the more that have to re-grow and remember the root system in place has grown to support the size of the tree as it is now. So if you remove half of the root system you will have half as much root system available to sustain the canopy of the tree. So you will have to cut the tree back and then water, water & water so the roots that are left can absorb as much water as possible to support the canopy. Also using a transplanting fertilizer would help your cause 10-52-10 would be good or something akin to that with a big middle number (phosphorus).
Have your own question for the Gardener? Ask here!
- Hi looking to order some baby’s breath. Do you have any? How much?
- Hi, I bought a Dwarf Korean Lilac (tree form) from your nursery. Your website says it can grow in a container. What width and height container should I buy? Your website also says it won’t perform the same if in a container. What would be the differences? And finally what is the winter care if put in a container? Does it need any outside light during winter or anything else during winter?
- Any idea why I have about six trees out of forty that look like this? The trees right beside this one are fine but there’s a bit of red on a few of the really mature trees as well. The needles or leaves or whatever you call them aren’t really dry and dead either, just red and unhealthy? My neighbours have the same issue.