Before I begin I would like to mention that this will work to protect all of your brassica family plants from those white cabbage butterflies. As you will see in the video, I am not only using this method to protect my kale, and broccoli plants as well. The thing that you need to keep in mind is how tall the plant is that you are protecting.
Last year I put a row of broccoli across the back of the bed (left to right in the video) and it ended up pushing up both ends of the netting. This year I am remedying this by planting the broccoli directly under the tallest part of the frame. This should keep everything in place, as well as protected.
This is a very simple way to protect your cabbages and other brassicas, but it is by no means the only way. Many gardeners have had lots of luck with “hiding” their plants in between others of a different family. This is done not only by planting a cabbage or two in between many other types of plants, but also by spreading them through the whole garden. This keeps the predators, like those bloody white butterflies, confused as to where the plants they want are.
I tried this in the past and it never worked out for me, but I also, until last year only had a few little gardening plots around the yard. I think this lead to my problem, as I didn’t have much for other vegetables, and perennials to hide the cabbages and broccoli between. I am hoping that this will be my go-to method once I have more space set up for planting, but for now, I am very happy with the method in the video.
Another method that can help you out is companion planting. I tried planting dill near my cabbages a few years ago, and I have to say, I did have less damage to the cabbage than in years prior. I think if I had more dill, or other aromatic herbs, and had it and my cabbage spread through the yard, I would have done even better.
The method shown below is simple, give it a watch, and give it a try. You don’t need a fancy small greenhouse frame like I used, you can use anything from some PVC bent over the bed, to a fancy wooden frame that took you three days to build. The important part of the project is that the netting covers the entire crop and that the holes are too small for the cabbage butterflies to get through.
Thanks for watching, reading, and remember to keep on gardening!