Will the Branches Growing Out of a Tree Stump Become a Big Tree?

Photosynthesis

• Trees survive and make food through the process of photosynthesis. Photosynthesis is how plants make food by harnessing the power of the sun's rays. A tree stump has all of its photosynthetic portions removed, as roots and wood do not photosynthesize. In order for a shoot from the stump to survive, it must be able to conduct photosynthesis and provide food for the root system of the old tree.

Decomposition

• The moment a tree is cut down, it begins decaying. Just as a piece of wood would decay if you buried it in moist soil, a stump will decay faster if it is extremely close to, or beneath ground. Moisture also hastens its decay. If the tree stump decomposes at a rate faster than the suckers grow, the stump will not survive and the suckers die.

Stored Food

• As a tree stump sends up its suckers, it uses stored food in the root system for energy and resources to grow foliage. Until the suckers are established enough to produce food for the tree, it relies on these food stores in its roots. Depending on how much food is stored, the supply may run out before the suckers can photosynthesize sufficient nutrients for the tree.

Water Loss

• A tree stump loses a significant amount of water in the form of sap through its wound. Sealing over a stump using branch sealant may help the stump retain some water and encourage regrowth. Many home improvement stores sell tree paint intended for use on cut branches and can safely be used to seal the stump.