From our perspective, timing is everything. The ideal moment for this procedure is during our period of active growth but not peak flowering, typically in the early spring or after the main summer bloom has faded in early autumn. At these times, the soil is warm, and the milder temperatures mean we experience less transplant shock. Our energy is focused on root production rather than supporting a massive display of flowers. Please avoid dividing us during the heat of midsummer or when we are in full, glorious bloom; this would be incredibly stressful and could be fatal as our resources are already maximized.
To prepare us for the move, please water our root system deeply a day or two before the intended division. This hydrates our cells and makes the surrounding soil easier to work with, minimizing root damage and tear. Have your new planting holes prepared beforehand; we do not appreciate having our delicate roots exposed to sun and wind for any length of time. These new homes should be in a sunny location with well-draining soil, as we are susceptible to root rot if left standing in water.
Using a sharp, clean spade or garden knife, carefully dig around our outer perimeter, lifting the entire clump from the ground. Gently shake or wash off excess soil to better see our root and crown structure. Look for natural points of division—separate stems or clusters of stems with their own healthy, white roots attached. Tease these sections apart with your hands if possible. For tougher, woody-centered mature clumps, you may need to use two garden forks inserted back-to-back into the center to lever us apart or make clean cuts with a sharp knife. Ensure each new division has a good portion of roots and several healthy growing points (shoots).
Place each division into its prepared hole, setting it at the same depth it was growing at previously. Backfill the hole, firming the soil gently around our roots to eliminate air pockets. Water each new plant thoroughly immediately after planting; this settles the soil around our roots and provides essential hydration. For the first few weeks, keep the soil consistently moist but not waterlogged to encourage our new root systems to establish themselves in their new territory. A light layer of mulch can help retain this moisture and regulate soil temperature. While we are tough plants once established, this process is a significant shock, so consistent aftercare is vital for our successful regeneration.
