Arborvitae Care - Ask Extension
When is the best time to fertilize arborvitae and what is the best fertilizer to use? Should I use a time-release fertilizer or not?
Knowledgebase
Arborvitae Care #744662
Asked April 16, 2021, 12:30 PM EDT
When is the best time to fertilize arborvitae and what is the best fertilizer to use? Should I use a time-release fertilizer or not?
Yamhill County Oregon
Expert Response
Peggy: From your picture, it could be a challenge to fertilize each plant. What you are aiming for is about one to one and a half cups of ammonium sulfate (21-0-0) per plant. You could put some on one side of the hedge and then move to the other side of the row. The exact amount per plant isn't critical. The ideal time to do it would be right before a rain. But it should be done soon. If you have a soaker hose in place to water the plants in the summer, you could put the fertilizer next to the soaker hose and turn it on. Hope this helps. Chip Chip Bubl OSU Extension/Columbia County<personal data hidden>.
Dear Chip,
I was able to fertilize each plant and just before the rains came this weekend. Thank you for your help. I really appreciate it.
Peggy Rouse
On 04/19/2021 8:51 AM Ask Extension <<personal data hidden>> wrote:
