free shipping on most orders over $125 - $7.95 FLAT RATE ON ALL OTHER ORDERS!

Learning Center
Product Instructions (PDF) Tree & Shrub Care Guides About Tree Insects About Tree Diseases How-To Articles Features Hardiness Zones
Customer Service
Contact Us Ordering & Shipping Returns & Exchanges
My Account
Sign In or Create an Account Order Status
View cart

Svg Vector Icons : http://www.onlinewebfonts.com/icon

support@treehelp.com
0
Your shopping cart
Your cart is currently empty.
Continue shopping

Phytophthora

Collar or crown rot is caused by a fungus that invades a tree’s lower trunk or upper roots and begins to block the tree’s vascular system. The infection point often develops as a canker which causes a girdling (strangulation) of the tree as it spreads.

Crown rot and collar rot refer to the same disease, except they have different names depending on the location of the infection (on the root stock or the scion portion of the graft union).

The most obvious symptom found on an infected tree is a partial or complete girdling of the trunk. The diseased tissue at first appears orange and reddish-brown, then becomes browner as the rot and decay advances. The disease spread is most prevalent in areas that have poor drainage or standing water.

Recommended Steps to Control Collar and Crown Rot:

It is important to ensure that there is proper drainage in areas of collar or crown rot outbreak or in susceptible areas. At first sign of the disease treat with Agri-Fos Systemic Fungicide. Repeat treatment as needed, depending on the level of disease. Prune and remove cankers that have developed. Be sure to properly sanitize the pruning knife during the canker removal process.

Filter by

Brand
0 selected Reset
Type of Tree
0 selected Reset
Price
$
$
Availability
0 selected Reset

Filter by

Brand
0 selected Reset
Type of Tree
0 selected Reset
Price
$
$
Availability
0 selected Reset
102 products
Filter and sort

Filter and sort

102 products

Brand
Clear
Type of Tree
Clear
Price

The highest price is $74.95

$
$
Clear
Availability
Clear
Clear
Clear