Periodical cicadas emerge every 13 or 17 years, depending on.

A The “tassels” that drop from oak trees are called catkins, and they are the spent male flowers whose purpose is to shed pollen that is carried by the wind to female flowers. If pollination Estimated Reading Time: 40 secs. Mar 02, A The “tassels” that drop from oak trees are called catkins, and they are the spent male flowers whose purpose is to shed pollen that is carried by the wind to female flowers.

If pollination occurs, then the female flowers will develop into the acorns that are the seeds of the oak tree. Apr 16, Arts & Entertainment. What are those furry, wormlike, pollen-y things falling from your oak tree?

Here is the absolute worst tree I have had to put up with: Goldenball Lead tree.

The large amount of oak flowers this spring indicates a big acorn crop this stumpdelimbing.barted Reading Time: 3 mins. Apr 09, ANSWER: The live oaks are dropping male catkins.

Their structures carry the male flowers of the trees. Live oaks, like many shade trees, produce separate male Estimated Reading Time: 2 mins. Apr 17, Caused by a small wasp, Jumping oak galls typically appear on the leaves of valley oak and California white oak. These round, seed-like galls fall off leaves when mature.

One wasp lives inside each gall; the wasp's activity may make the gall"jump" several inches off the ground.