Snowflakes and ice crystals turn every rhododendron into a wintery work of art in the bare garden. That's why the work of making a rhododendron winter-proof so that it comes back to blooming life in spring is worth it.
Are rhododendrons hardy and how do you protect them in winter?
Most rhododendron varieties are hardy, such as Rhododendron luteum, Yakushimanum hybrids and Catawbiense hybrids. To protect them in winter, moderate watering, winter protection and, for potted plants, a wind-protected location are important.
Through intensive breeding, new varieties are constantly being created, some with several flower colors. But beautiful foliage, compact growth and, above all, good winter hardiness are also important breeding goals, for example with the varieties
- Rhododendron luteum
- Yakushimanum hybrids
- Rhododendron Catawbiense Hybrid
As a rule, it is not a problem to overwinter them in the garden. Exceptions are some species that are not so winter hardy and varieties grown in containers. What can help with wintering? Of course, as a hobby gardener, this is of particular interest to you.
Winter precautions and winter protection
Rhododendrons have very shallow roots in the soil. Frost first moves from the ground surface deeper into the earth. Therefore, the shallow roots are the first to be threatened by frost damage. This endangers the entire plant. Protect your rhododendron despite mild winters and global warming!
Overwinter rhododendron in the bed
Partial shade and moderately acidic soil with a pH of 4.0 to 5.0 is the optimal location. So you've already done half the work so that your rhododendron gets through the winter he althy.
Due to less rain and snowfall, your rhododendron lacks natural protection from the cold in winter. It is therefore important to water moderately with low-lime water before the onset of frost. If temperatures are below zero and there is direct sunlight at the same time, there is a risk of dry damage. No watering helps, only shading with reed mats (€34.00 on Amazon). Then your rhododendron will survive the coldest season and delight you with lush green leaves.
Overwintering rhododendron in a pot
Rhododendrons in buckets or pots require more care. A wind-protected location without direct sunlight brings it into spring. The planters should stand on a thick Styrofoam plate. Moderate watering prevents drought.
You can avoid these care mistakes
- Many rhododendrons that do not survive the winter do not freeze to death, but die of thirst.
- When watering, avoid waterlogging and ensure that excess water drains away.
- Curled leaves can also be a sign of frost. When it gets warmer, they roll up again.
Tips & Tricks
Overwintering rhododendrons planted in the bed is not a problem as long as the soil and location are right. When kept in containers, winter protection and a wind-protected location are required. Most importantly: don't forget to water. But you can't drown them either!
