At the risk of alienating the few loyal visitors Dijemeric Visualizations, where math meets photography, the next few postings will be of a gardening topic using videos shot with a Pentax K7 DSLR. My backyard hosts a number of oak and bay trees along with an understory of native plants such as Sword Ferns, Trillium spp, wild rose, Yerba Buena mint, and others I have not yet identified. There are also invasive weedy species which if allowed to grow eventually dominate and displace the natives.
All plants, native or invasive, have growth and reproductive strategies. The secret in bringing the invasive plants under control is to take advantage of the differences in those strategies. The immediate subject is Witchgrass. It is an annual that grows to a height of about two feet prior to setting seeds. The strategy is to cut the Witchgrass at a height low enough to remove the seed heads before they ripen but low enough to leave the shorter native plants, such as the Trilliums.