Rhododendrons are beautiful flowering shrubs that can live for decades when properly cared for. However, sometimes rhododendrons outgrow their space or the soil conditions change over time, making it necessary to transplant them to a new location. Replanting a rhododendron bush is not difficult, but does require some planning and care to help the plant adapt and thrive in its new home.
When to Replant Rhododendrons
The best time for replanting rhododendrons is in early spring, before the plant has leafed out. This reduces transplant shock because the plant is still dormant. Fall is another option, after the plant has gone dormant. Avoid transplanting in summer when the plant is actively growing.
It’s important to prepare the new planting site in advance by amending the soil with compost or peat moss to improve drainage and nourishment for the rhododendron The new location should provide dappled sunlight with some afternoon shade,
How to Prepare for Replanting
Proper preparation is crucial for success when replanting rhododendrons
- Excavate a 12-inch deep hole at the new planting site. Make it wide enough to easily accommodate the root ball.
- Dig a 5-foot diameter circle around the rhododendron you want to transplant. This allows access to cut through the outer roots with a shovel.
- Prune off any dead branches or stems to reduce stress on the plant.
- Water the plant deeply 1-2 days before transplanting. This helps keep the root ball intact.
- Truss up the branches with rope to protect them during transport to the new site.
How to Transplant the Rhododendron
Follow these steps for safe transplanting:
- Using a sharp transplanting shovel, slice into the soil around the root ball in a circle. Cut through any large roots extending from the ball.
- Once the root ball is free, slide a tarp or plastic under it to move it. Keep the root ball intact.
- Carry the rhododendron carefully to avoid breaking branches. Put it directly into the prepared hole.
- Check that the top of the root ball sits at ground level. Backfill with the amended soil.
- Water thoroughly until the soil is moist but not soggy. Stake the shrub if needed to stabilize it.
- Apply 2-3 inches of mulch around the base, keeping it away from the stem.
- Continue deep watering every 7-10 days during the first year if rainfall is lacking.
Post-Transplant Care
Proper aftercare will reduce transplant shock and help the rhododendron establish quickly:
- Maintain a layer of organic mulch around the shrub to regulate moisture and temperature. Refresh it once a year.
- Prune off any dead leaves or stems in the months after transplanting.
- Apply a balanced, water-soluble fertilizer a few weeks after replanting. This encourages new root growth.
- Monitor for signs of disease or insect infestations which can stress the plant. Treat any issues promptly.
- Avoid touching or disturbing the root ball the first year. Allow time for the roots to stabilize.
- Be patient! It may take a full year for the rhododendron to bloom again as it recovers.
With proper timing, care in preparation, gentle handling, and attentive aftercare, you can successfully transplant rhododendrons to any suitable new location. In time, they will once again become a prized feature of your garden with their unique, showy blossoms. Follow these tips when you need to move an established rhododendron bush, and you’ll have success.
How to Transplant a Rhododendron | This Old House
FAQ
Can you dig up and replant a rhododendron?
How deep are rhododendron roots?
How do you replant a rhododendron?
Dig a large hole. Dig a hole that is at least twice the width and depth of the rhododendron’s root ball. This will give the roots plenty of space to spread out and grow. Add soil amendments. Mix in some compost, peat moss, or other soil amendments to the soil in the new hole. This will help the rhododendron adjust to its new home.
How do you plant a rhododendron plant?
Prepare the planting site by digging a hole that is twice the width and depth of the root ball. Gently loosen the roots of the rhododendron plant and carefully remove it from the original pot. Place the rhododendron plant in the hole and backfill with soil. Water the rhododendron plant thoroughly.
How do you move a rhododendron?
Once you have the rhododendron out of the soil, it is time to move it to its new home. When you are ready to move the plant, make sure to dig a hole that is twice as wide and twice as deep as the root ball. Gently place the root ball into the hole and then fill it in with the soil you removed.
How do you care for a transplanted Rhododendron?
Carefully dig up the rhododendron, taking care not to damage the roots. Place the rhododendron in the planting hole and fill in with soil. Firmly press the soil around the roots and water thoroughly. Mulch around the plant to help retain moisture and protect the roots from the sun. How do I care for a transplanted rhododendron?
