Content
- Lilac does not grow - causes and countermeasures
- Common causes of lack of growth
- Wrong location
- Unsuitable soil / waterlogging
- nutrient deficiency
- Weakening due to diseases
- Tips
Nutrient deficiency can be a reason for lack of growth
Lilac does not grow - causes and countermeasures
Planted in the right location, lilac is a very vigorous shrub that grows between 30 and 50 centimeters in height and width per year. Of course, this growth is dependent on the variety, as dwarf lilacs, which only reach a height of 150 centimeters, are considerably slower with an average of five to 20 centimeters a year. However, if the lilac does not really want to grow, then it can have different causes.
Common causes of lack of growth
A lilac that does not want to grow often does not bloom, or does so little. Both behaviors are a clear indication that something that does not appeal to the undemanding shrub. In most cases, the problem is related to location - it is too dark, the soil is too heavy, too poorly drained or contains too few nutrients. Sometimes, however, an infection with a pathogen can be the cause. Especially for mushrooms, the lilac is very vulnerable.
Wrong location
Sun, sun and even more sun - Syringa, as Lilac is botanically called, needs as much as possible a full sun, where it is at least four hours a day directly in the light. If it is too dark for him (for example, because a larger tree casts shadows at some times of the day), he does not grow despite the otherwise healthy appearance and often stops blooming. It only helps to move to a sunnier place.
Unsuitable soil / waterlogging
Even a heavy, loamy soil does not like the lilac: Here it can not spread its meter-deep roots just below the ground unhindered, also often lacks these soils of nutrients. But this dampens the moisture here, which in turn can cause a site-related waterlogging - with the result that the roots of the lilac rot. Again, only a transfer to a more suitable soil or a thorough soil improvement helps.
nutrient deficiency
Nutrient deficiencies often occur in very sandy or heavy soils, which should therefore be improved at planting. As an acute help, you can provide the lilac with an organic fertilizer, especially compost is very good. If you mulch the root disk, there may also be a lack of nitrogen.
Weakening due to diseases
If the lanky lilac has brown leaves or spotted spots, it is probably due to a disease caused by a bacterium or a fungus. Here a pruning and strengthening of the shrub with field horsetail, which is applied as brew helps.
Tips
Sometimes, the root pressure of adjacent growths or of the lawn by which the lilac stands ensures reduced growth. In this case, the lilac just does not have enough space.