Top 10 Things You Can Do For Your Trees

Toronto ’s trees exist in conditions quite different from those of a natural forest setting. We need to provide them with special care against the harsh urban environment. Follow the tips below to help your trees survive and thrive.

• Plant the right tree in the right place . Ensure adequate above and below ground space, as well as appropriate species for the site conditions.
• Water regularly . A slow, deep watering once per week for mature trees; twice per week for young trees. Use a hose at the base of the tree on a slow drip or a soaker hose wrapped in concentric circles.
• Protect the trunk from lawn mower damage and improve your soil quality by maintaining a wide circle of mulch around the base. Ensure mulch is not touching the base of the tree. Apply in a 2 inch deep doughnut-shape as far out as possible.
• Avoid tying, nailing or attaching anything to trees . Even string can cut off the flow of water and nutrients and strangle a tree. If trees are staked, remove all staking materials after one year.
• Avoid digging, tilling or excavating around or near trees . Root damage may take a few years to become evident but can be fatal. Remember that 90% of a tree’s roots are in the top 18 inches of soil and can extend up to three times the width of the canopy.
• Avoid the use of de-icing salt in winter . Salt applied to driveways, walkways, and other areas eventually migrates down into the surrounding soil. This can cause serious damage to trees – even those located several meters away. Chop away ice and use sand instead.
• Watch for early signs of stress . Look for weak foliage, discolouration, early leaf loss or visible signs of pests or disease. Identify the specific problem and environmental stresses that may be contributing factors before attempting treatments.
• Use organic alternatives to chemical pesticides and fertilizers on lawns and trees . Improve your soil by adding organic matter each spring and fall. Sprinkle a 1-inch layer of compost on the ground out as far as the branches reach.
• Use only proper pruning techniques and never use wound paint . Proper pruning cuts will seal themselves. Do your research before making any cuts and never try to keep a large tree small by pruning or topping it.
• Consult a certified arborist for pruning, to diagnose and treat problems, to prevent damage when planning construction or renovations and for preventative care of mature trees. Be sure the individual working on your trees is a qualified aborist, certified by a recognized association such as the International Society of Arboriculture (ISA) or the American Society of Consulting Arborists (ASCA). Also be sure they have adequate insurance.
• For more information, contact LEAF at 416-413-9244 or visit www.leaftoronto.org .