Fertilizing Forsythia

Feeding at the proper time and using the correct product can help Forsythia thrive. This bush is easy to care for, and a well-timed application of fertilizer keeps Forsythia loaded with blooms during the spring and lush and green for the remainder of the growing season. Forsythia is a fast grower, and keeping the plant well fed ensures it is healthy while pushing out new growth. Read on to find out the when and how we recommend you feed your Forsythia bush.


How to Fertilize Forsythia

Fertilize Forsythia by applying a slow-release granular fertilizer around the base of the plant. Water right away to help the granules dissolve and absorb into the ground. Apply more fertilizer every few weeks to ensure the plant receives continued nutrition. It is essential to water plants immediately after applying fertilizer, so the granules do not burn the roots of the plant.


Best Time To Fertilize Forsythia

Young Forsythia should not be fed. Wait until the second spring to start fertilizing Forsythia. Feed Forsythia every few weeks during the spring and summer. Fertilizing while the plant actively grows will keep the shrub lush and full.

Best Fertilizer For Forsythia

Forsythia prefers a balanced fertilizer with an NPK ratio near 10-10-10. For Forsythia, we love The Andersons PGF Balanced 10-10-10 Fertilizer, and Southern Ag All Purpose Granular Fertilizer 10-10-10, which are both high quality formulas. Established plants are drought-tolerant, so use a slow-release granular fertilizer instead of a water-soluble fertilizer. Products like Miracle Grow are food for Forsythia, just check the ratio and follow the instructions on the package.

Forsythia Fertilizing Tips

  • Do not fertilize Forsythia during the first growing season
  • Apply a slow-release granular fertilizer
  • Feed Forsythia every few weeks
  • Select a fertilizer with a ratio approaching 10-10-10

-Always wear protective gloves and a face mask when handling chemical fertilizers.

-Closely follow all directions and storage guidelines that are on the fertilizer label.

This page contains affiliate links to products on Amazon. We may receive a commission for purchases made through these links.

 Alison Cotsonas Profile Pic

Author Alison Cotsonas - Published 09-17-2022