|This large shade tree has 3 to 6 inch grey to green leaves. It is grown mainly for its yellow-green flowers that form globe shaped clusters and its short horned, round clusters of seed clusters. Tolerates various climate condtitions. The foliage of nearly all species has a strong pungent odor similar to menthol. Well drained soil is preferable. Trees do very well planted from seed. Plant seeds in spring or summer keep shaded and water sparingly until 2 to 3 inches high.