Unidentified Objects In Potting Soil - Knowledgebase Question

Joseph, UT
Avatar for wsg5
Question by wsg5
April 15, 1998
I was repotting some container plants (rosemary, hydrangea) and noticed little yellow balls packed in the soil around the plants roots. These balls were as hard as rocks. I have looked in every gardening book I have with no success as to identifying these little things. I scraped them out of the soil before I repotted the plants. Can you tell me what these "marbles" could be?

Answer from NGA
April 15, 1998
You've discovered encapsulated time-release fertilizer, probably put there by the grower or nursery where you first purchased your plants. One trade-name is Osmocote. Adding this type of fertilizer is common practice in the nursery trade. Water dissolves the outer coating and allows the fertilizer to slowly seep out.

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 Murky and is called "Pink and Yellow Tulips"

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