An everyday fertilizer can feed a tree only if its label shows slow release nitrogen and it is placed below the grass roots, since quick release lawn and garden blends push weak growth instead. A specialized tree fertilizer adds a nutrient mix matched to the species and releases across the whole growing season.

What should a tree fertilizer label show?

Slow or controlled release of nitrogen and directions for placing it at the roots. Quick release nitrogen built for lawns drives fast, soft growth, and fertilizer left on turf is mostly taken up by the grass before it reaches the tree.

When is a specialized tree fertilizer worth it?

When the tree has particular needs or is already struggling. To feed a mature maple, oak, or birch on a blend matched to its species, TreeHelp Premium Fertilizer is chosen from its Type of Tree menu and spread over the root zone once the soil warms in spring. Where a tree is sick or struggling, TreeHelp Therapeutic Tree Fertilizer is worked into the root zone instead, supplying high potassium and phosphorus with only limited nitrogen.

How is any tree fertilizer placed so the tree gets it?

Below the grass roots, across the root zone out to the dripline, the circle beneath the outer branches. Drilling a grid of holes around the tree with the TreeHelp Soil Drill, a 9 inch auger bit that fits a standard electric drill, puts fertilizer under the turf where tree roots can reach it.

Frequently Asked Questions

Does lawn fertilizer near a tree feed it too?

Only partly. Most of it is taken up by the grass, so a tree needs its own feeding placed below the turf.

Can yellow leaves be fixed with a specialized fertilizer?

Not always. Yellowing between green veins often points to iron or manganese chlorosis, which supplement spikes address.

Do palms need a specialized fertilizer?

Usually. Palms need potassium, manganese, and magnesium, which complete palm spikes supply.

Can a specialized fertilizer be used on a newly planted tree?

Yes, at a lighter rate. One bag that feeds a mature tree covers two to three smaller or newly planted ones.