En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Fertilizing a Mature Mountain Ash

Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.

Search Smarty Plants
    
 
See a list of all Smarty Plants questions
Can't find the answer in our existing FAQs, submit a question to Mr. Smarty Plants.

Need help with plant identification, visit the plant identification page.
 
rate this answer
Not Yet Rated

Friday - May 10, 2013

From: Flushing, MI
Region: Midwest
Topic: Trees
Title: Fertilizing a Mature Mountain Ash
Answered by: Anne Van Nest

QUESTION:

What kind of fertilizer should I use on a mountain ash tree that is 25 years old (or more)?

ANSWER:

Congratulations on having a mountain ash that has reached a good mature age. Often mountain ash (Sorbus sp.) are short lived due to insects or diseases. The Yardener.com website has a good information sheet on caring for mountain ash that has good tips. Under fertilizing they say "Mountain ashes are not heavy feeders. They can survive nicely on minimal nutrition. However, it is a good idea to feed mountain ashes in the yard once a year. In the spring sprinkle a handful or two of a fertilizer on the soil under the tree out as far as the reach of its branches (the drip line). The rain will soak it in.” They also have information about fertilizing trees.

The International Society of Arboriculture (ISA) has a good information sheet for mature tree care on their website. They offer many preventative care suggestions and discuss mulching, pruning and fertilizer application.

The Michigan State University has diagnostic services and have posted an information sheet on fertilizing trees and shrubs on their website.

 

From the Image Gallery


American mountain ash
Sorbus americana

American mountain ash
Sorbus americana

More Trees Questions

Trees and shrubs turning brown in Dripping Springs TX
October 31, 2011 - Due to the extended drought - a number of trees and shrubs in our Dripping Springs area property have turned brown. Specifically: Live Oak; Agarita; Ash Juniper; Cedar Elm. Is this a dormant stag...
view the full question and answer

Native Plants for a water collection pit in Bronson, FL
August 22, 2013 - I live near Gainesville, FL in a low rural area with many cypress swamps around & bought this 5 acres 2 years ago. About 15 years ago a pit was dug on my 5 acres to give the rainwater somewhere to go...
view the full question and answer

Lantana trees in Wyoming MI
August 16, 2010 - We love lantana with its multicolored flowers. This weekend we visited Michigan State University and saw "lantana trees".They were amazing!! Have these trees been grown from the annual plant we have...
view the full question and answer

Is sulfurous well water affecting leaves on trees in Belton TX
November 07, 2011 - We installed an irrigation system for our buffalo grass lawn last spring. The grass is fine but the leaves on the trees are burned where the water hits them. I suspect that the well we are using fo...
view the full question and answer

Shade trees for Tucson AZ
May 25, 2012 - I need to plant some "fast growing" trees or shrubs on my southwest yard in order to reduce the heat in my bedroom. What do you suggest? I live in Tucson, Arizona. Thank you in advance. I'm...
view the full question and answer

Smarty Plants's Facebook profile Support the Wildflower Center by Donating Online or Becoming a Member today.

Mr. Smarty Plants wants you to be his Facebook friend. Click the Facebook icon to add yourself to Mr. Smarty Plants list of friends.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP
© 2014 Lady Bird Johnson Wildflower Center