Yellow leaves are a sight in the garden that does not bode well before autumn. This statement alone is not enough, because the affected plant must be returned to the green path. Unfortunately, blackberries are no exception.
Why do blackberries get yellow leaves?
Blackberries can get yellow leaves if you water them too rarely and too little in a hot summerYellow leaves can also be an indication that they are lackingnutrients missingYellowish spots and other leaf changes usually indicate diseases and pests.
How do I avoid water shortage in summer?
Blackberries are shallow-rooted plants that can only get water from the top layer of soil. But it is precisely this layer of earth that dries out first in hot periods.
- Earth must never dry out completely
- Watering blackberries on hot days
- regularly with smaller amounts of water
- Wet accumulation is also harmful
So that the soil does not dry out quickly, you should also underplant blackberries or mulch them thickly.
How do I prevent nutrient deficiency?
Blackberries do not require a lavish supply of nutrients, but they also need to be fertilized once a year.
- annually in springfertilize
- Compost is ideal fertilizer
- Apply 2 liters per square meter
- a little more for nutrient-poor soils
- other suitable long-term fertilizers: horn shavings and rotted manure
- Berry fertilizer alternatively or as an admixture
From July, blackberries may no longer be fertilized. The new canes, which will bear fruit the following year, should no longer continue to grow, but rather become hardy.
Which diseases and pests cause leaf changes?
Unfortunately, blackberries are very susceptible to various diseases and pests. If there are leaf discolorations, spots, deposits or deformities, you should take a closer look. Only the correct diagnosis enables effective control. A little overview:
- Blackberry rust: purple-reddish spots on upper sides of leaves; orange-brown, later dark brown pustules on the underside of leaves
- Downy mildew: Brightening and yellow spots on upper leaves; gray or gray-violet fungal growth on the underside of leaves
- Strawberry Blossom Picker: Leaf Holes
- Aphids: leaves curled downwards; stunted shoot tips
- Fruit tree spider mite: light yellow to bronze-colored speckles on young leaves; Leaves curl up and fall off; poor shoot growth
Tip
Fertilize and water blackberries in the pot more extensively
Blackberries, especially upright varieties, can grow well in pots. The limited amount of soil can neither store much water nor provide an excess of nutrients. That's why you should water and fertilize blackberries in pots more regularly than outdoor specimens.
