How to Transplant a Root Bound Hoya

Hoyas (Hoya carnosa) feature glossy evergreen leaves and clusters of small white flowers, which bloom during the summer. Although hoyas can grow as outdoor perennials in U.S. Department of Agriculture plant hardiness zones 10 through 12, they are most often grown as a houseplant. Hoya flowers best when it's slightly root-bound, so it only requires transplanting into a new pot when it becomes so badly overgrown that it is no longer flowering or putting on new growth. Transplant the hoya in late winter before the flower buds form, because any disturbance after bud formation causes the buds to drop off.

Pot
Potting soil

Instructions

- 1
  Fill the new pot one-third full with a standard houseplant potting soil that drains well. Use a pot no more than 1 inch larger in diameter than the old pot because hoya won't flower in an overly large container. Select a pot with at least one bottom drainage hole.
- 2
  Thump the sides of the hoya pot firmly to help dislodge the root ball. Turn the pot on its side and slowly tip it upside down, sliding the roots out of the container. Support the top of the root ball with your hand as the plant slides out of the pot.
- 3
  Set the hoya in the prepared pot so the top of the root ball sits 1 to 2 inches beneath the pot rim. Do not disturb or trim the roots during transplanting. Fill in around the roots with additional soil until the hoya is at the same depth it was growing at in its old container.
- 4
  Water the soil until the excess moisture drips from the bottom of the pot and the soil feels evenly moist. Set the plant in an area that receives six hours or more of direct sun daily.

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