hydrangea - Knowledgebase Question

LaCrescent, mn
Avatar for galasa
Question by galasa
May 23, 2007
I bought two blue hydrangea bushes and I was wondering what I need to feed them to keep them blue?

Answer from NGA
May 23, 2007
The large leafed hydrangeas (macrophylla types) will be blue with an acid pH soil and pink with a higher or alkaline pH soil. A pH range of about 5.0 to 5.5 should produce blue flowers. If your soil is naturally acid you may not need to worry about this at all. An annual application of compost and/or a complete granular fertilizer such as 10-10-10 according to the package instructions should keep the plant healthy. Pruning is usually limited to removing any winter damage or possibly thinning older less productive branches. The plants bloom on the previous year's growth so pruning is usually kept to a minimum. Ongoing care would include using several layers of mulch to keep the soil cool and moist in the summer and possibly providing wind protection in the winter if the plant is in a particularly windy spot.

You must be signed in before you can post questions or answers. Click here to join!

« Return to the Garden Knowledgebase Homepage

Member Login:

( No account? Join now! )

Today's site banner is by Visual_Botanics and is called "Hidden Bird Bath"

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.