Home & garden

Farm hydrangea - plant, fertilize and cut

They conjure up beautiful colors in the garden and do not even need a lot of maintenance: you cannot go wrong with garden hydrangeas when designing the garden.

Farm hydrangea is a popular flowering plant for the garden, also known as garden hydrangea, Japanese hydrangea and pot hydrangea. The special feature: the plant bears striking, spherical or elongated (fake) flowers, which are made up of many small individual flowers. The color spectrum ranges from white to pink to blue, whereby the pH and mineral content of the soil are responsible for the blue specimens (more details here). The leaves of the hydrangea are fleshy, oval and tapering.

  • Family: Hydrangea family
  • Subfamily: Hydrangeoideae
  • Genus: Hydrangeas / Hydrangea
  • Type: hydrangea
  • Botanical name: Hydrangea macrophylla

The ornamental shrub grows up to 50 centimeters a year under good conditions. Overall, the hydrangea reaches a height of up to two meters. The width of large specimens is around one and a half meters.

Location and soil conditions

Farm hydrangeas are easy-care garden residents who leave a colorful impression in the home, ornamental and farm gardens. The hardy shrub thrives outdoors, but can also be kept as a container plant.

Farmer hydrangeas are suitable for shady and partially shaded to sunny locations that should be protected from the wind. If the plant is in the blazing sun, you have to water it a lot, because then the hydrangea will also tolerate intense sunlight. A humus-rich, slightly acidic and nutrient-rich soil is also optimal. A low lime content is also fine.

Care and prevention of diseases and pests

Water needs:

The farm hydrangea needs a lot of water. If the plant grows in a bucket, it must never dry out. However, you must then prevent waterlogging. Outdoor hydrangeas must also be watered regularly. A little tip: With a mulch layer you can easily improve the soil moisture.


A nitrogen-rich fertilizer with a low phosphorus content is suitable as fertilizer. You can use special hydrangea fertilizers, but also fit azalea and rhododendron fertilizers. Hydrangeas in the garden and in large pots should be given solid slow release fertilizers in spring and early summer. Smaller specimens in pots are given liquid fertilizers.


A cut is usually not necessary. It is enough to remove dead parts. If you cut too much, the flower will suffer the next year.


A slight frost protection is always useful for tub plants. But you should also protect outdoor plants from cold temperatures with a brush cover.

Diseases and pests:

Farmer hydrangeas are quite robust, but there can still be a deficiency of chlorosis. The plant then suffers from iron deficiency. The symptoms appear on yellow leaves with green veins. The reason is either a base that is too basic or the substrate lacks the trace element iron. You can remedy this by watering the hydrangea with rainwater and adding acidic fertilizer or incorporating peat. In the second case, use iron chelate fertilizer.

It is more difficult to deal with powdery mildew, which unfortunately often occurs with hydrangeas. You must remove affected leaves immediately. In the worst case, you even have to dispose of the entire plant. Aphids, scale insects and spider mites, on the other hand, mostly only occur in house hydrangeas. Outdoor specimens, however, are mostly resistant to pests. All pests that can occur on hydrangeas and effective control methods here at a glance.