The blueberry, also known as blueberry or blackberry, is one of the popular berry bushes in the garden or in the pot on the balcony. In autumn the blueberry bush sheds its leaves. In the spring it sprouts again.
Why don't the blueberries sprout?
If your cultivated blueberries refuse to produce new growth in spring, the reason is often a cold winter. Planted shrubs are considered to have good to very good winter hardiness, but persistent icy cold can lead to plant death.
Is the blueberry hardy?
Blueberries arehardy plants. Most cultivated blueberries can tolerate temperatures down to around minus 29 degrees Celsius. Some varieties such as “Bluecrop” cannot be harmed by icy cold temperatures down to minus 40 degrees Celsius.
Why doesn't my planted blueberry sprout?
If your blueberry does not sprout in spring, therootsof the bush are probablyfrozen in winter. This can happen despite the very good winter hardiness if
- the maximum tolerated cold has lasted for a longer period of time
- the tolerance limit of winter hardiness has been exceeded
- no blanket of snow protecting the roots
Note: If the winter was dry and cold, your blueberries did not actually freeze, but died of thirst.
Why doesn't my blueberry sprout in the pot?
Blueberries that are kept in containersneed winter protection so that they do not freeze and sprout again in spring. They also need to be watered every now and then.
Tip: The information on winter hardiness is irrelevant for pot cultivation, as it only refers to planted shrubs.
Tip
Rejuvenation pruning stimulates new growth
Blueberry plants can live up to 30 years under optimal conditions. However, to reach this age, a rejuvenation cut is necessary. Every three to four years (from the age of four) remove all old shoots in the spring. In addition, cut off old branch parts above young side shoots.
