When most people think of landscape maintenance, they think of lawn service—mowing the grass, edging the driveways, and laying down weed control. However, the most valuable assets on your property are your mature trees. A single massive oak can add thousands of dollars to your property value. Proper tree care requires a totally different approach than turf management.

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To keep your North Fulton trees healthy: Water them deeply during summer droughts, apply a 2-3 inch layer of mulch (but keep it away from the trunk!), schedule structural pruning in the winter, and use deep-root fertilization to replenish soil nutrients that are lost in a suburban environment.

1. Deep Watering Strategies

Georgia summers are notoriously hot and dry. While a light 15-minute sprinkler cycle might keep your Bermuda grass green, it does absolutely nothing for a mature tree. Tree roots exist in the top 12 to 18 inches of soil, and they need deep, penetrating moisture.

  • The Rule: During a drought, mature trees need about 10 gallons of water for every inch of their trunk diameter, applied once a week.
  • The Method: Instead of sprinklers, use a soaker hose or a drip irrigation line laid in a spiral pattern around the "drip line" of the tree (the area directly under the outermost branches). Let it run for an hour to ensure the water penetrates deeply into the root zone.

2. The "Donut," Not the "Volcano"

Mulch is fantastic for trees. It insulates the roots from extreme heat, retains moisture, and breaks down into organic nutrients. However, improper mulching is one of the leading causes of tree death in Alpharetta and Johns Creek.

Never create a "mulch volcano" where the mulch is piled high up against the bark of the tree. The bark is designed to be exposed to air. When wet mulch sits against the trunk, it rots the bark, suffocates the root flare, and invites fungal disease.

Instead, create a "mulch donut." Lay 2-3 inches of organic mulch out to the drip line, but leave a 4-inch gap of bare dirt directly around the base of the trunk so the root flare can breathe.

3. Deep-Root Fertilization

In a natural forest, fallen leaves and decaying wood constantly replenish the soil with rich organic nutrients. In a suburban yard, we rake up all the leaves and bag the grass clippings, systematically starving the soil.

Surface fertilizers applied to your lawn rarely reach the tree's roots because the thick grass intercepts them. Professional arborists use deep-root fertilization. We use specialized equipment to inject liquid fertilizer and beneficial mycorrhizal fungi directly into the root zone, 8-10 inches below the surface. This bypasses the grass and gives the tree exactly what it needs to fight off diseases and push out a thick, vibrant canopy.

4. Structural Pruning

Left to their own devices, trees can develop terrible structure—growing heavy branches over your roof, developing weak V-crotches that split, or accumulating dangerous deadwood. Regular tree pruning by a Certified Arborist ensures the tree grows strong and balanced. For most hardwoods in Milton and Roswell, an inspection and structural pruning every 3 to 5 years is sufficient.

Frequently Asked Questions

You must be very careful. Many broadleaf weed killers (herbicides) used on lawns can be absorbed by tree roots and cause severe damage, leaf curling, or even death to the tree. Always read the label and avoid spraying over the tree's root zone.

If the tree was planted too deep, or if you piled soil/mulch over the root flare, the tree will show signs of slow decline: yellowing leaves, early leaf drop in the summer, and dead branches at the top of the canopy.

Yes, absolutely. The bark on surface roots protects the tree's vascular system. Repeatedly hitting them with a mower blade causes open wounds that allow rot and decay to enter the root system. Mulching around the tree is the best way to prevent mower damage.

Yes. English Ivy is extremely invasive. It competes with the tree for water, traps moisture against the bark (causing rot), and its heavy vines can pull branches down during a storm. Cut the ivy at the base of the tree and let it die off.

Call us if you see any sudden changes: rapid leaf browning, oozing sap, sawdust at the base of the tree, peeling bark, or if you suspect you need tree removal for a dead or hazardous tree.

Caring for your trees is an investment that pays off in shade, beauty, and property value. If you need a professional health assessment or deep-root fertilization, our Certified Arborists are here to help.