Many garden owners will probably not fertilize their lilacs, but rather rub their eyes in amazement at this question. In fact, it can be very useful to provide additional nutrients to lilac bushes that you have planted yourself. Read the article below to find out why and how best to do it.

If the lilac is fertilized appropriately, it blooms even more magnificently

Do you have to fertilize planted lilacs at all?

Basically, you don't "have to" fertilize your lilacs. However, if it has been in place for a few years and you may have wondered about a waning bloom, then the cause could be a lack of essential nutrients. If the lilac suffers from a lack of nutrients, it no longer has enough strength to develop the flower - and at some point it may not flower at all. Lilacs in locations with very poor soil also benefit from fertilizer application.

When is the best time to fertilize?

Both planted and potted lilacs are fertilized for the first time in early spring, just before they sprout. Depending on the nature of the soil, this may be sufficient if the soil is rather nutrient-rich. If, on the other hand, the subsoil is sandy and poor, you can feed the lilac again in June.

Since lilacs (with the exception of the Preston lilac) prefer to grow in calcareous soil, the pH of the soil should be between 5.5 and 7. If it is lower, fertilize the plant once a year with a calcareous fertilizer. Work this carefully into the top layer of soil.

First fertilization already at the planting

However, the lilac receives the first fertilization when it is planted. Here you mix the excavation with plenty of compost and a generous handful of horn shavings.(32.93€) The natural fertilizer acts as a boost for healthy growth and provides the plant with all the nutrients it needs for successful growth.

Fertilize planted lilacs properly

Whether and how you should fertilize your planted lilacs depends on the specific soil conditions in your garden. The leaner it is, the more frequently it has to be fertilized. If possible, use an organic, slow-acting fertilizer with high levels of potassium and phosphorus. For this, only little nitrogen should be contained, because this acts as a growth booster with the result that the lilac grows very quickly and develops many shoots - but no flowers.

Which fertilizers are suitable for supplying lilacs?

Organic fertilizers are completely sufficient for the supply of nutrients and also have the advantage that they do not seep into the groundwater. Particularly suitable for lilacs are:

  • mature compost
  • Horn shavings (32.93€) or horn meal
  • Stable manure (horse manure is best, but no poultry manure! This is very nitrogenous.)
  • home-brewed stinging nettle and horsetail brew

Alternatively, you can feed the lilacs with blue grain (caution, only use a little!) or a commercial fertilizer for flowering shrubs.

tips

Potted lilacs should be planted in fresh substrate about every two years and, if necessary, in a larger pot. Otherwise, between April and September, fertilize with a liquid flowering plant fertilizer (€10.47) about every two weeks.

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Trees