Fertilizing Encore Azaleas and Hydrangeas Organically

Fertilize both Encore azaleas and hydrangeas in spring right after azaleas finish flowering. Use Holly-tone (Espoma)—an organic, acidifying fertilizer with cottonseed meal that lowers soil pH, which azaleas prefer.

Hydrangea Color Control

• Blue flowers (macrophylla): Holly-tone maintains acidity for blue blooms.
• Pink flowers: Use Espoma Plant-tone or Flower-tone plus a handful of lime.
• Red or white flowers: Holly-tone is fine; these varieties don't change color with pH.

Application Technique

Apply a small handful evenly under the canopy. If mulched, gently push mulch aside with your hand, drop fertilizer on soil, then replace mulch. Water thoroughly after application to move nutrients to roots.

Holly-tone is widely available in 5-lb bags at garden centers. Other quality organic acidifying fertilizers work similarly—consult your local nursery.