We always recommend at least some control measures be taken. These should be used by pond owners to help determine a stance on cattails and decide whether or not they should be controlled. The pros and cons of cattail growth are given below. The growth process starts over the following spring. In the winter, the cattails go dormant and the shoots turn brown, fall over, and decay. This spreads more cattails to other portions of the pond, or even to a neighboring body of water. The seed heads eventually rupture and the seeds are dispersed by wind action. Cattails can reach 10 feet tall by the time the seed heads are produced. The rhizomes produce hundreds of young cattail shoots which elongate and produce seed heads by mid-summer. These rhizomes create an extensive network that can quickly surround a pond. Unlike most plants, cattails have roots or “rhizomes” that grow laterally.
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