Table of contents:
- 1. Freezing of flower buds
- 2. Incorrect cropping
- 3. Deficiency of nutrients
- 4. Weak greenhouse seedlings
- 5. The hydrangea bush is affected by the disease
- 6. The root system is poorly developed
- 7. Insufficient watering
- 8. Hydrangea is suppressed by neighboring plants
Video: Why Hydrangea Does Not Bloom Grow Errors. Photo
Summer months are the time of flowering hydrangeas. This beautiful deciduous shrub is richly scented with flowers from June to September. Florists willingly use large inflorescences for wedding decors and bouquets. To admire the beauty of a blooming hydrangea bush in your garden, you should take care of the proper conditions for it. Unfortunately, some hydrangeas do not bloom from year to year, despite the care and efforts of gardeners. Why this happens, we will tell in the article.
1. Freezing of flower buds
Most hydrangeas can winter in open ground without shelter, not only in southern Russia, but also in the middle lane. But not a large-leaved hydrangea. It requires additional shelter for the winter (and some of its varieties require a cool wintering in the basement at temperatures not lower than +5 ° C). Take care of the minimum insulation already in September, because inappropriate frosts can destroy flower buds.
Around the beginning of October, you should make an air shelter for the hydrangea using, for example, fallen leaves. For the winter, hydrangea is covered with straw mulch or branches of a coniferous tree, covered with paper or agrofibre.
In early April, they begin to remove the shelter layer by layer, but if frosts are expected, agrofibre must be thrown over the hydrangea again.
2. Incorrect cropping
Different types of ornamental hydrangea require different techniques for sanitary and formative pruning. The flowers of the panicle hydrangea (Hydrangea paniculata), as well as the tree-like (Hydrangea arborescens), bloom on the shoots that form this year, and the large-leaved hydrangea (Hydrangea macrophylla) - on the shoots of the past year. When pruning, only old or damaged branches are removed and young shoots with flower buds are not affected.
When cutting flowers of large-leaved hydrangea, you need to trim the stems very modestly so as not to remove many new buds. Use the same care when removing wilted flowers.
In summer, it is recommended to carry out pinching so that the shrub grows. This procedure should not be performed later than mid-August as it can interfere with kidney formation.
Pruning for flowering for paniculate and tree-like hydrangeas is done in the fall, shortening the shoots to two or three pairs of formed buds, then the shrub will give many luxuriantly blooming shoots next year.
Remember hydrangeas require good sun exposure. The lack of flowering can be the result of excessive thickening of the crown of the bush. Remove old four- and five-year-old branches each year so the flower buds have access to light. For hydrangeas blooming on the shoots of the current year, only young branches are valuable, which must be preserved.
3. Deficiency of nutrients
The lack of flowers is often the result of carelessness in the use of fertilizers. Even an insignificant deviation from the correct dosage and non-observance of the feeding time can disrupt the fragile balance of the mineralogical composition of the soil.
Every spring, flower growers abundantly fertilize hydrangea bushes, scattering crushed compost and other organic matter under them. In spring and summer, a generous hand is sprinkled with multicomponent mineral fertilizers for flowering plants. At the same time, they do not take into account that the excessive content of some elements makes it difficult to assimilate others.
Hydrangeas are susceptible to leaf chlorosis caused by too much calcium in the substrate. This interferes with the absorption of iron and nitrogen, resulting in leaf discoloration and poor or no flowering. The soil should be acidified with crushed bark, peat or ammonium sulfate, only then all the nutrients necessary for the hydrangea will be absorbed.
4. Weak greenhouse seedlings
In early spring, the markets sell container seedlings of hydrangeas with large, already blossoming clusters of inflorescences. Do not buy already flowering hydrangea bushes for planting in the garden in the spring. These are plants grown in greenhouses that have undergone a distillation process (flowering at an unusual time). They are not hardened or accustomed to natural conditions.
If, nevertheless, the plant was purchased or received as a gift, it will be better for it to winter in a dark cellar, at a temperature of +5 ° C.
5. The hydrangea bush is affected by the disease
Hydrangeas that are grown in waterlogged soils (near water bodies) or are too thickened are often prone to fungal diseases. Hydrangeas can be affected by powdery mildew or leaf spot, suffer from gray rot.
As a result of the defeat of a fungal disease, the plant weakens, its growth is inhibited and, as a result, flowering weakens. That is why it is so important to provide proper conditions for growing hydrangeas, as well as to carry out early and correct diagnosis of fungal diseases, and to apply appropriate fungicides for treatment.
Prophylactically, to prevent diseases, plants can be sprayed with growth and flowering biostimulants.
6. The root system is poorly developed
Young hydrangea bushes take time to develop strong roots. Do not lose patience when growing your seedlings, or better - help the plants in their development by creating the right conditions.
Closer to autumn, it is advisable to use special autumn fertilizers that promote the development of the root system, strengthen the roots of the plant, and prepare them for winter.
7. Insufficient watering
Timely watering is equally important both before and after flowering because garden hydrangeas do not respond well to lack of water. But hydrangeas are especially sensitive to lack of water when they bloom. Intense watering should be done not only in the spring after planting, but also in the summer to prevent these highly decorative flowers from drying out. Lack of moisture will negatively affect the appearance of both flowers and leaves.
To retain moisture around the bushes, it is recommended to spread mulch. Too long staying hydrangea in the heat without proper watering can destroy the plant or, at best, the bush will not bloom for several seasons until it is fully restored.
8. Hydrangea is suppressed by neighboring plants
Another reason for insufficient flowering can be the wrong location of the plant, that is, planting it in an overgrown and shaded part of the garden. If the young hydrangea is not growing or blooming, thin out the surrounding trees and shrubs to give the hydrangea more room.
Sometimes the place for some reason is not suitable for the plant, despite the conditions created. It is enough to transplant the capricious bush to another part of the garden and next year it will show itself in all its glory.
It is believed that hydrangeas are the queens of the semi-shady corners of the garden. But some species and varieties feel great in a place open to the sun. True, they will have to be watered in sunny areas much more often.