Content
- The most beautiful hardy summer lilac varieties
- Which species of summer lilac are hardy?
- The most beautiful hardy varieties of Buddleja davidii
- Tips
Buddleja davidii is hardy to -20 ° C
The most beautiful hardy summer lilac varieties
Pink, purple, white, blue and even yellow - the popular summer lilac delights the beholder with its summery blossoms. However, not all species and varieties of this perennial flower shrub are hardy - so if you want to know for years if you know what to do and what to do - and which varieties are most likely to survive a cold winter.
Which species of summer lilac are hardy?
Probably the most commonly planted species are Buddleja davidii and Buddleja alternifolia, both of which are hardy at the site after a certain period of standing and tolerate temperatures of up to minus 20 ° C. This applies to almost all varieties of the named species, but only from an age of about five years. Freshly planted and younger specimens, however, require a slight winter protection. By contrast, less endemic species such as the ball-summer lilac (Buddleja globosa), the Himalayan Buddleja colvillei and the yellow summer lilac (Buddleja x weyeriana) are not hardy. These summer lilacs should only be cultivated in the bucket, planted out in the garden they freeze and, unlike Buddleja davidii and alternifolia, they do not repopulate.
The most beautiful hardy varieties of Buddleja davidii
Plant the following hardy varieties of Buddleja davidii:
For all these varieties (although the list is of course not complete, because Buddleja davidii is very rich in different variants), the shoots may freeze in winter. However, this is no reason to panic, then after a pruning in the spring, the bush drives out of the roots again. It is therefore important that you protect the roots from frost, for example by mulching the root area.
Tips
Even if the selected variety is considered hardy, you should still overwinter it during a potted culture frost-free - here, the plant has not the opportunity to counteract clashing temperatures.