The hardy bluebell tree (bot. Paulownia tomentosa) is particularly noticeable because of its large leaves and impressive flower spikes. However, the roots are also important for it to thrive. These are very strong, but also sensitive.
What are the roots of the bluebell tree like?
The roots of the bluebell tree (Paulownia tomentosa) are deep, strong and sometimes up to 4 meters long. They do not tolerate waterlogging and should be protected from frost and only pruned carefully, especially when planted in containers. Make sure there is sufficient distance from house walls and walls.
When planting, remember that a fully grown bluebell tree needs a lot of space. It can grow up to 15 meters high, with an equally large crown. The root ball reaches approximately the same dimensions.
Like many other plants, the bluebell tree does not tolerate waterlogging. A high groundwater level can also damage the roots, which are very sensitive to moisture. In both cases, root rot can occur. The only thing that helps here is to cut off the affected root parts generously so that infections, for example with fungal spores, do not spread.
Can I prune the roots of my bluebell tree?
Regular pruning of the bluebell tree contributes to he althy and harmonious growth. However, the roots do not need this pruning. However, if you want to keep your Paulownia in a pot for a longer period of time or even train it into a bonsai, then cutting the roots is necessary or essential. But please exercise caution.
Do the roots of my bluebell tree need winter protection?
Even though the bluebell tree is considered hardy, it is grateful for some protection from frost. This applies, on the one hand, to the young shoots and buds so that the tree can bloom at all, but also to the root ball. You can easily protect this from freezing with a thick layer of straw or leaves.
If you have planted your bluebell tree in a pot, it is particularly important to protect it from the roots freezing. It's best to wrap the entire bucket with an old blanket, jute sacks (€15.00 on Amazon) or fleece so that the frost cannot reach the roots from below.
The most important things in brief:
- deep and powerful
- sometimes up to 4 m long
- can cause massive damage to house walls and walls
- do not tolerate waterlogging
- should be protected from frost
- prune carefully (when planting in containers)
Tip
Don't plant a bluebell tree too close to your house wall or a wall. Its strong roots could cause significant damage to the masonry.
