If propagating by division, it's best to divide the plants in the spring. You can too plant bought plants or divide plants from a friend’s backyard. You could want to try planting ice plants. However, they aren't edible and could also be poisonous when consumed in massive quantities. Nevertheless, it’s an annual that must be replanted every year if it doesn’t self-seed. However how precisely are you able to inform when it’s time to prune your lilacs? Firstly, only lilac bushes that attain about 6 feet tall needs to be pruned. When your blooms are spent, you’ll know it’s time to prune. For perennial chamomile, gardeners have to prune the whole plant back to organize it for winter. Failure to harden off your chamomile plant may result in transplant shock, scalding, or plant dying. The very best time to transplant a lilac bush is within the Spring before scorching Summer time temperatures settle in, so now's the proper time. In a single month to six weeks, the transplant should have a strong root system is in place.