Answer
Oct 06, 2021 - 11:53 AM
Some say perennials can be planted anytime until the ground freezes. We recommend planting at least 30 days before the first hard frost, to allow new feeder roots to get established before the ground freezes.
Spring-blooming perennials, especially bare root, are best planted early in the fall. Fall planting, while the soil is still warm, allows roots time to establish. Thus, plants emerge with well-established roots, providing a stronger start next spring.
Early spring would be next best.