Features: Pussy willows have both male and female sex trees. The
pussies — call catkins — typically bloom in early spring
(February-March), with the pussies turning into flowers by April.
Catkins on the male tree are different than those on the female tree,
and are typically better looking.

Facts: The average height range for pussy willows is between 20 and 35 feet, with the tree having a total spread between one-quarter and one-third of its height. The tree will grow 4 to 6 feet each year, reaching maturity in about 5 years.

Considerations: While pussy willow trees do not take too much space to grow, their roots are invasive. They can ruin septic tanks and water lines. Heavy pruning is necessary to keep pussy willows strong, healthy and looking clean. Full sun is preferable when planting, although the trees can handle partial shade.  Source: ehow

Pussy Willows. Photo credit: Randy Neufeldt