Spring planting is fine, too. To help you hunt for hostas, we asked leading hosta breeders and nurseries to name varieties that are time-tested in gardens and are so good that they won't be surpassed by new varieties in the near future. The many roots that grow from the rhizome are about as thick as heavy twine, something like the roots of daylilies. New rhizomes form slowly, and a clump may take four or five seasons to begin looking its best. That can be in four to six years, depending on the vigor of the variety.
Experts advise against planting hostas closer in an attempt to get a full effect sooner.
Instead, fill in with daffodils, Virginia bluebells or annuals. Established hosta plantings have been in place for 30 years and longer with no need for dividing. Where Hostas Grow Hostas are among the most adaptable perennials. Hostas need a period of cold weather, at the onset of which they turn a pleasing yellow and then go dormant. Insufficient winter chill and dry air, such as in western deserts, are the chief limiting factors.