Falling Leaves At The Rose. Common Causes

2024 Author: Gavin MacAdam | [email protected]. Last modified: 2023-12-16 13:38

Autumn leaf fall is a natural process of completion of the growing season of trees and shrubs. Premature fall of foliage in the summer is a reason to seriously think about the causes of this phenomenon. Rose bushes show gardeners that significant deviations are observed in the development of plants. First, let's figure out what factors affect early leaf fall

Reasons for shedding leaves

There are several reasons for the rapid fall of vital leaf plates on roses. Let's combine them into three large groups:

1. Physiological:

• illumination;

• humidity;

• temperature regime;

• nutrients.

2. Pathogens (fungi, microorganisms that cause infection of plants).

3. Harmful (insects that use bushes as food).

Let's take a closer look at all the items on the list. Today we will focus on the first section.

Illumination

Lack of light for roses, as much as an excess of it in the midday hours, negatively affects the preservation of the leaves. The best landing option is a sunny spot before lunchtime. In the second half, a slight partial shade is desirable.

Roses planted on the north side of tall shrubs or medium-sized conifers feel great under the cover of neighbors. Planting is allowed at a considerable distance from fruit trees, in openwork penumbra.

Humidity

Excess or lack of moisture causes premature foliage to fall. With a shortage, the bushes instinctively try to reduce the evaporating surface, it is not enough for the normal development of the plant. Therefore, it dumps excess "ballast".

With excessive irrigation, prolonged rains, flooding by groundwater, the root system decays, the flow of moisture to the aboveground mass is disrupted. This process affects primarily the leaf surface, leading to the loss of vital plant parts. The stagnation of water at the roots is indicated by the yellowing of the veined part of the leaf plate.

The device before planting a drainage layer of broken bricks, pebbles, expanded clay, the construction of mounds, solves the problem of flooding. Timely watering in the required doses will save pets from drought.

Temperature regime

Prolonged cold weather in the middle of the season will disorient the plants. Active preparation for wintering begins, dropping leaves that are not needed by the bushes. Light cover through temporary arcs made of non-woven material will change the temperature regime. With the onset of warm weather, it is removed.

Food

A balanced diet has a beneficial effect on the preservation of green mass. The lack of basic macronutrients provokes early leaf fall.

What are the signs of a substance shortage?

1. Nitrogen. Small size, pale green surface, sometimes covered with reddish spots. Weakly branched, curved thin shoots. Slow growth. Drying of unopened buds.

2. Phosphorus. Small leaves in the upper part acquire a dark color, from the lower - purple-reddish. Veins, petioles, stems are purple. Flowering, root development is delayed.

3. Potassium. Redness of young leaves. Old - gradually turn yellow from the top. Over the edge, the color change goes down, gradually acquiring a brown tint. Flowers are getting smaller.

4. Calcium. Irregularly shaped plates of smaller size, bent at the edges, light yellow specks flaunt in the center. The tips of the stems turn white, dying off over time.

5. Magnesium. Old foliage becomes "marble" in color, curls. The veins remain green. Spreads from center to edge.

The timely introduction of complex complex fertilizers will help to restore the disturbed nutrition. Better to use water-soluble forms. They are absorbed and absorbed by the plant faster. This group includes: ammophos, "Zdraven", "Kemira lux", nitroammofosk. A tablespoon of the drug is dissolved in 10 liters of liquid.

At the beginning of the season, nitrogen components prevail, in the middle and at the end of the growing season - phosphorus-potassium components, contributing to better ripening of shoots before wintering.

Diseases causing shedding of foliage will be considered in the next article.