Autumn is a fine time for garden bed makeovers. The cooler temperatures help with water loss from leaves, this allows the plants being able to tolerate being ripped out of the ground and being replanted into the ground. Having leaves still on the plants helps new root growth in the new planting area, and helping establishing new growth in the new spot.
If you would to try this in the summer months most of the plants will die during transplant, as the root systems will be shocked.
Doing a garden bed makeover is curbing the growth of aggressive perennials and bulb plants, threatening to take over the entire bed. Perennials and Bulbs in most garden beds bore many offspring that over time reproduce their own offspring creating years and years of new plants.. T.