I just read on Fox Hills Lilac Farm's website that the best time is between April and Oct. They stated that 75% are done in the fall.
To properly transplant lilac bushes, dig a hole twice as wide as the root ball, carefully lift the plant, place it in the new hole at the same depth as before, backfill with soil, water thoroughly, and mulch around the base. Ensure the new location has well-draining soil, receives adequate sunlight, and is protected from strong winds. Water regularly and monitor for signs of stress during the first year after transplanting.
New lilac bushes don't require maintenance pruning until they are about 6 - 8' tall. The time to prune mature lilac plants is just after the flowers have faded. They set the next season's flower buds almost immediately, so late pruning will mean sacrificing next year's flowers. Pruning early also gives the new shoots more energy to develop.
After flowering.
it depends what season it is...
When trimming lilac bushes, it's best to prune them back to about one-third of their height, but you can cut them as close as 12 to 18 inches from the ground if necessary, especially for rejuvenation. This encourages healthy growth and blooming in the following season. However, avoid heavy pruning in late summer or fall, as this can remove buds for the next year's flowers. Always ensure to use clean, sharp tools for a clean cut.
The best time is after the first frost and before the last frost of your region. This is because you want to transplant when the plant is dormant.
Spring
Ok here is the scoop, how to transplant rasberry bushes per Grandma Junker, who after years we are replanting her original bushes. you want 2-3 sticks per bush/plant, plant bushes 4-6 inches apart digging hole 6inches deep aprox. and adding just the cheap bags of manuar for fertalizer in each hole. plants should be around 6inches in height (cut lower for less berrys this year and more next) I left mine long? tmcconaughey@stillwaterauto.com
They need to be planted and/or transplanted in the spring. Wait until the ground is thawed fully and just about ready to receive tender annuals (after the last frost). Also FYI: if in the late summer, you bend the tips of the canes over (the first year canes that grew this summer, not the second year ones that produced berries this year), and pinned the tips into the soil, they will grow roots for transplanting. The following spring, you can transplant those new plants after clipping them off the parent plants for easy propogation!
The best time to transplant a peach tree is January. The trees are still dormant from the winter, which will reduce the shock of transplantation. It is also best to transplant a peach tree when it is at least one year old and preferably not after they reach three years old.
David Crosby had a liver transplant in 1994.
Survival rates for pancreas-kidney transplant recipients were 95.1% after one year and 89.2% after three years.