Lilacs are extraordinarily beautiful plants that show off gorgeous blooms in delicate shades of purple, but they need to be fertilized. They are low maintenance shrubs that can serve as an ideal landscaping plant due to their beauty as well as the shade they offer when fully grown. If you are considering growing lilacs, you should know how to properly care for them. This includes knowing how and when to give your plants fertilizer.
When properly maintained, lilac shrubs will grow and thrive, lasting many years. You should make sure to not keep them too wet when administering water, as they will not do well if their deep roots are overly wet. In times of drought, this is an exception, of course, as most plants need extra moisture during such a stressful time.
When planting your lilacs, make sure to do so in a good, rich soil that has an acidic pH of between 6 an 7. Lilacs are hardy plants and will tolerate almost any type of soil in spite of preferring acidic conditions. Compost materials spread around the plants will help to retain the moisture from watering, especially during dry periods.
As far as fertilizer goes, lilacs don't need frequent fertilizing. A good general-purpose fertilizer that is high in phosphorous will suffice, and you should apply it to your plant during the early spring. This will provide just enough nourishment to encourage the growth of new lilac blooms. Avoid over-fertilizing, as this will result in an excess in nitrogen, which will in turn produce a poor amount of new blooms or none at all.
Make sure to repeat your application of fertilizer to your lilacs only after the old flowers have died. Make sure to spread a thick layer of mulch or compost around your lilacs to encourage more growth and bigger and better flowers.