White hydrangeas - care


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White hydrangeas - care: hydrangea

Particularly beautiful specimens are: panicle hydrangea Phantom with its huge flowers, the pan hydrangea Dart's Little Dot, one of the smallest hydrangeas, the ball hydrangea Annabelle with their large flat globular flower balls, the plate hydrangea Lanarth White with its evergreen foliage, the Climbing hydrangea Hydrangea petiolaris, whose beautiful flowers bloom all summer long, and the snowball hydrangea Grandiflora with its creamy white flower balls.

Location & Planting Substrate

Most white hydrangeas like a sunny to partially shaded spot. He should be protected from cold winds. Most species are cultivable as potted plants. The plant substrate for white hydrangeas does not have to have a specific pH, as with pink or blue hydrangeas. They always bloom white regardless of the pH. The plants prefer a nutrient-rich, moist, slightly acidic and loose soil. In spring, it is recommended to mulch the soil with compost.

Pouring and fertilizing

Hydrangeas need a lot of water. They do not tolerate calcareous irrigation water. If they are often poured with it, they go in. Rainwater is best, but it is also softened tap water. Waterlogging is essential to avoid dryness but also.
Fertilization takes place from April to September. There are special hydrangea fertilizers, which are tailored to the wishes of the plants. But you can also use rhododendron and azalea fertilizer. Ideal is the use of long-term fertilizers. For potted plants liquid fertilizer is better.

overwinter

Most hydrangeas are hardy. In the first year after planting, they should be protected with brushwood. However, it often happens that buds that have formed in autumn freeze. In this case, these shoots must be cut back to the next eye. Ideal is the variety Endless Summer, it is hardy to -30 ˚C and also flowers on annual wood. The flower is so guaranteed and the flowers are beautiful white, but fade to a green.
Hydrangeas hibernating in the tub are not suitable for standing outdoors. You better bring them to a cool place, which can also be quite dark. A few degrees are not dangerous. Wintering hydrangeas are only occasionally watered so that the plant bale does not dry out.

cut

A cut is mainly made to make the plant more compact. One cuts after flowering. Shortly thereafter, the plant begins to produce shoots on the old wood again. Otherwise, frozen or sick shoots must be removed. Otherwise they will barely cut.
In the case of panicle hydrangeas, a strong and deep pruning occurs in early spring. They are blooming on annual wood. The cut secures a strong renewal, which then shows the blossom approaches.
Cut as a high tribe
For this one can only stand a straight central drive, from which then the tip is cut off. Thus, laterally shoots develop, which form the crown. In the following year, these shoots are cut in half after flowering. Side shoots below the crown are completely removed. The more often one prunes the side branches, the more compact the crown grows. You always cut after flowering.

multiply

Hydrangeas can be propagated by division, by cuttings from side shoots or by shoot tips.

Diseases and pests

The pests are spider mites, weevils and aphids. They are to be combated with the usual means. It can also lead to mildew. To prevent this, the right location is important. Healthy plants are very resistant. They make it hard for the mushroom spores to invade. Especially with strongly fluctuating temperatures it often comes to an infestation. Sick leaves should be removed. In an emergency you have to resort to a fungicide.
Every now and then also the leaf spot disease occurs. It is favored by a poor nutrient supply and high humidity. Sick plant parts must be removed. Location and nutrients need to be controlled.
Too much cold and moisture can cause botrytis bud rot. It occurs mainly during wintering. You can see them on the gray mold on the bud. Sick parts must be removed. On a good ventilation is important. Lower the humidity if possible.

Video Board: How to Grow Annabelle Hydrangeas.

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