Wicked Growth Shade Trees Fertilizer

Dense Canopies and Deep Green Leaves — A 20-10-10 Formula for Trees in Pots

Old Cobblers Farm Wicked Growth 20-10-10 is a high-nitrogen fertilizer for shade trees grown in containers. The 20-10-10 analysis means it contains 20% nitrogen — double the phosphorus and potassium — to drive vigorous canopy development, deep green leaves, and strong branch structure, with 10% phosphorus supporting the root system and 10% potassium building overall plant resilience.

Trees in pots can't send roots out for more nutrients the way in-ground trees can: they depend entirely on what's in the container, and frequent watering steadily washes nutrients out of the mix. That's why container trees need regular feeding through the growing season — and why this formula uses simple container-size dosing, from 1 tablespoon for a small pot up to ¼ cup for an extra-large planter.

Key Benefits

Built for canopy growth — 20% nitrogen — double the phosphorus and potassium — drives dense canopy development, deep green leaves, and strong branch structure.

Made for life in a pot — Container trees can't forage for nutrients and frequent watering washes them out; a 4–6 week feeding schedule keeps potted trees supplied all season.

Dosing by container size — Four clear rates — 1 tablespoon to ¼ cup — match the dose to the pot, from a patio redbud to an XL planter sycamore.

Roots and resilience included — 10% phosphorus supports the root system and 10% potassium builds resilience, so growth above is matched below.

Scales with your collection — A 5 lb bag feeds roughly 20–80 container trees per application, with 10, 15, and 20 lb sizes for courtyards and bigger collections.

Where to use it: potted and raised-container shade trees on patios, courtyards, balconies, and entryways — including red maple, river birch, tulip tree, American sycamore, littleleaf linden, hackberry, eastern redbud, bald cypress, hornbeam, weeping willow, dwarf and upright elms, zelkova, catalpa, sassafras, sweetgum, Kentucky coffeetree, Osage orange, and black locust.