If you want to get rid of an entire grove of bamboo, you’ll want to work from the outer edges inward. Separate the outer ring of bamboo first so that the bamboo gets contained in one area. Depending on how large a grove you’re working with, this may take weeks, months or even years. This technique is also effective if you want to preserve a section of bamboo. Cut through the rhizomes that connect sections of bamboo so that they will no longer spread and continue growing together. Continue with the process of killing one section while allowing the other to live. You’ll need to periodically cut back the remaining section to keep it from “running” underground and spreading to other areas.
You can cut the culms at any time of year, but doing it in the spring when you see new growth is a good time to get rid of bamboo. The bamboo is using its energy stores, and you’ll be able to get rid of more of it more quickly than if you attempt to get rid of it while it’s dormant.
If the grove is too big to mow and dig all in one day, remember to work from the outer edges inward, gradually containing the grove as you work to get rid of it.
You can dig a trench that will act as a barrier if you’d prefer not to use a non-porous material in your yard. Installing a pond or stream will also effectively block bamboo roots.
If you want to try an herbicide, use a glyphosate herbicide or a selective-grass herbicide directly on new bamboo growth each time it appears. A selective-grass herbicide is not as effective as the glyphosate type in controlling bamboo, but it may be used in flower beds or around ornamental shrubs. [6] X Trustworthy Source Royal Horticultural Society Leading gardening charity in the U. K. providing resources for identifying, growing and caring for flowers and other plants Go to source In order for the herbicide to be effective, it’s important that you spray any new shoots as soon as they appear.