This video provides homeowners and novices with a highly effective technique for killing knotweed in 4 steps.

00:23: Most advice geared toward those treating large infestations.
00:50: Most people are dealing with a small plot of knotweed - about 15 x 15 feet or 4 x 4 meters.
01:33: Damage to dwellings and foundations is "extremely rare."
01:48: Knotweed damage is primarily to ecosystems, our yards, our gardens.
03:27: Different application methods include foliar and stem injection. These methods have shortcomings for homeowners and property managers.
05:32: In the past Green Shoots recommended a cut stem technique for small patches. Results aren't as good as they should be.
06:12: One alternative to spraying, injection, and cut stem is to use direct application techniques such as wiping.
06:33: direct application techniques such as herbicide wiping works especially well with systemic herbicides such as glyphosate.
07:21: Wiping foam herbicide on knotweed stems helps the user deal with tall knotweed stems.
08:43: Our trials on wiping knotweed stems with foam herbicide.
09:13: We used our small foam herbicide dispenser in our testing. This dispenser contains 140 milliliters or a little less than 5 oz.
09:58: Our foam wiping method of applying to the knotweed stems worked really well! Off-target harm was minimal.
10:10: 4 Steps to to a direct application such as wiping to knotweed stems
10:17: First, knock down the dead knotweed stems if you didn't do this already.
10:38: In terms of timing, do your treatments in the fall after the knotweed has flowered.
11:08: Second, mix the herbicide solution in the small foam dispenser. Mix 70ml of herbicide, 65 ml of water, and 5 ml of Blue Foaming Agent.
11:25: Third, plan your order of treatment of the knotweed - where you will start applying and where you will end.
12:01: Fourth, you can do the direct application in different ways - by applying the foam herbicide directly onto the stem with the nozzle of the dispenser.
13:13: A variation on this technique is to use a rubber glove to wipe the foam on the knotweed stem.
13:36: Still another variation is the drizzle technique. This works well for small, low-lying knotweed plants - the kind that grow in the year following a good treatment.
14:15: I estimate that the direct application of foam including foam wiping uses about half as much herbicide as stem injection.