Buxus Microphylla

Step-by-Step Guide to Repotting Buxus microphylla (Littleleaf Boxwood)
 
Choose the Right Time:
Repotting is best done in early spring, just before new growth starts. Young plants benefit from repotting every two years, while mature plants can be repotted every three to five years.
Prepare Your Materials:
Select a pot that is slightly larger than the current one and has good drainage holes. Use a well-draining soil mix, ideally loamy and slightly acidic to neutral (pH 6.0–7.5). For bonsai, you can add pumice or gravel to improve drainage. Have clean, sharp scissors or pruners on hand.
Remove the Plant from Its Pot:
Carefully take the Buxus out of its pot. If the plant is root-bound, gently tap the sides of the pot or squeeze it to loosen the root ball. Tease apart any circling or compacted roots with your fingers or a chopstick.
Inspect and Prune the Roots:
Look for any signs of root rot or damage. Trim away dead, mushy, or unhealthy roots using sterilized scissors. For container or bonsai plants, you can also prune back the outer and bottom roots to encourage new growth.
Prepare the New Pot:
Add a layer of fresh, well-draining soil to the bottom of the new pot. Place the plant so that the top of the root ball sits level with the rim of the pot or soil surface.
Replant and Fill with Soil:
Hold the plant upright and fill in around the roots with fresh soil, gently firming it as you go to remove air pockets. Make sure not to bury the stem; the root flare should remain visible above the soil.
Water Thoroughly:
After repotting, water the plant well to settle the soil and hydrate the roots.
Provide Aftercare:
Place the repotted Buxus in bright, indirect light or partial shade for a few weeks to minimize transplant shock. Keep the soil consistently moist, but not soggy, while the plant re-establishes. Avoid fertilizing for four to six weeks after repotting to let the roots recover.
Optional Mulching:
You can apply a thin layer of mulch around the base of the plant to help retain moisture and suppress weeds, but keep the mulch away from the main stem.
 
By following these steps, your Buxus microphylla will have the best chance to thrive in its new container.