Spiderwort (Tradescantia spp.) is a resilient perennial and a vigorous grower. Over time, its clumps can become overcrowded and require relocation or division to maintain plant health and manage spread. Choosing the right moment to transplant is essential for minimizing shock. By respecting the plant’s natural growth cycles, gardeners can ensure a quick and successful re-establishment in a new location.
Optimal Timing for Relocation
The best windows for transplanting spiderwort align with periods of cooler temperatures and reduced metabolic activity. Early spring is the most favorable time, just as the ground thaws and before the plant begins active growth. Moving the plant before new shoots emerge allows the root system to establish itself, encouraged by the naturally moist, cool conditions of spring. Early fall is the secondary, yet equally effective, window for relocation, allowing roots to anchor before winter dormancy after the summer heat has broken. Avoid transplanting during the height of summer, as intense heat significantly increases the risk of transplant shock and desiccation.
Preparation and Root Division
Preparing the new site involves digging a hole twice as wide as the root ball but no deeper. Amending the hole with compost improves soil structure and nutrient content. Spiderwort often benefits from division every three to five years, which rejuvenates older, crowded clumps. Before lifting the plant, cut the existing foliage back by one-third to half to minimize stress and reduce moisture demand. Once the clump is lifted, divide it using a sharp, clean tool, ensuring each section retains a healthy root mass and at least two or three growth points.
The Transplanting Process
To move the spiderwort, insert a shovel six to eight inches away from the base to capture the fibrous root mass. Lift the entire root ball with as much intact soil as possible, maintaining the structure of the roots. Move the divisions quickly to prevent the fine root hairs from drying out, which often causes transplant failure. Place the divided section into the pre-dug hole at the exact same depth as its original location, as planting too deep or too shallow can impede growth or cause stem rot. Backfill the hole gently with the amended soil, lightly tamping it down to eliminate air pockets and ensure firm contact between the roots and the new soil.
Ensuring Post-Transplant Survival
Immediate and thorough watering is the most important action after transplanting, as deeply soaking the area helps settle the soil around the roots and removes air pockets. For the first few weeks, keep the soil consistently moist but never waterlogged, since spiderwort roots will rot in standing water. Protect the newly transplanted divisions from intense afternoon sun for the first two weeks, using temporary shading to reduce water loss through transpiration. Compromised roots cannot support the leaves in harsh light. Avoid applying fertilizer immediately, as this can burn the stressed roots; wait until you observe clear signs of new, active growth.