Linden trees, also known as bee trees and basswood trees (and as lime trees in Europe), are large trees that grow in four-season climates all over the world. These trees can reach 80 feet in height and have a 40-foot spread.
The trees bloom in June and July and their yellow flowers are highly aromatic. They are extremely popular with honey bees (leading to the colloquial name of “bee-tree”), and you can buy basswood honey made almost exclusively from these trees. Linden trees have the reputation of producing some of the best honey in the world. It has been described as “delicate and mild, and has warm herbal notes and a clean finish.”
Linden trees grow in plant hardiness zones 3 through 8. The coldest temperatures in zone 3 can reach 40 below zero and 12 below zero in zone 8. Besides temperature, soil conditions influence the success of linden trees. They like finer soils that drain well but hold enough water to support the tree.
Linden trees are successful when planted wherever there is excellent to good farming soils. They prefer slightly acidic soil but will tolerate pH levels as high as 7.5. Linden trees do not withstand drought for prolonged periods and are not found in the western states of the US.
The leaves are large measuring anywhere from 3″ to 6″ in both length and width. The linden tree provides much of its own food since the leaves do not lose their mineral content as they decay. Linden tree leaves are high in calcium, magnesium, nitrogen, and potassium.