lollipop
To prune the lower branches of a tree or other plant so that new growth appears only at the top, where more light is received.
lollipop: strip a tree bare below, force growth at the crown
In arboriculture and plantation management, to lollipop a tree is to remove all or most lateral branches from the lower trunk, leaving foliage only in a dense ball at the top. The result resembles a lollipop on a stick. This is done deliberately to redirect the plant's energy upward and to expose the upper canopy to direct sunlight, which stimulates fruiting, flowering, or vigorous terminal growth depending on the crop.
The practice is most common in orchards, particularly with young fruit trees, and in forestry where spacing timber species vertically is desired. Removing lower limbs eliminates competing branch systems that would otherwise draw sap and nutrients downward. On young trees destined for a single straight trunk, lollipop pruning accelerates height growth and establishes a clear bole, which simplifies mechanical harvesting and reduces disease burden from branch crowding near ground level.
Risk and trade-offs
Aggressive lollipop pruning creates vulnerability. A tree with all foliage concentrated at the top has reduced leaf surface to generate photosynthates, weakening overall vigor; the bare trunk is exposed to wind stress and sunscald in open locations. If done too early in a tree's life or too severely, it can trigger excessive sprouting of water shoots from the main stem, which are weak attachments prone to breaking. Nursery and young orchard stock tolerate it better than mature trees.The name is obvious and visual, but the term carries little technical precision: severity and the height at which cutting stops vary widely by species, climate, and intended outcome. In some regions it is called lollipop pruning or lollipop training. In high-density plantings and intensive orchard systems, selective lollipoping of individual rows or trees allows fine control of light penetration and is sometimes combined with other canopy management techniques like summer pruning or hedging.
Lollipop pruning is distinct from pollarding, which is the repeated cutting back of a tree to the same point each year to produce multiple new shoots, and from topping, which indiscriminately removes the upper portions of a mature tree. Lollipop pruning targets the lower crown and is usually done once or a few times during juvenile growth, whereas pollard cuts are cyclical.