Growing cucumbers in a greenhouse is the staple way of growing them here in the UK. But how do you support them?
How to Support Cucumbers in a Greenhouse
There are a couple of different methods that are commonly used. You can either use bamboo canes or suspended string. The idea with both methods is to give the main stem of the cucumber something to grow up. You will have to tie the plant into whichever method you choose. I use metal plant ties but you can also use specialist plastic clips.
I use a singular cane per cucumber. I grow my cucumbers in grow bags so I just pop the cane a couple of centimetres into the soil. This is just to hold it in place, all of the strength from this structure comes from the cross beams.
So I have a bamboo cane for each plant, each of these canes just about touches the roof of my greenhouse (roughly six-foot-high).
Then along the top, I run a can horizontally. This cane is tied into each of the individual canes and also into the roof of the greenhouse. I use metal plant ties to tie everything together.
This leads to a very strong structure that is cheap, quick to build and more than strong enough to take cucumber laden plants with ease.
When growing with this method it is important to train your cucumbers and take out any side shoots. Otherwise, you will just end up with a jungle in your greenhouse. Trust me, cucumbers just love growing tons of leaves. I will provide a quick guide to training cucumbers but you can find a more detailed guide here.
I tie the main stem of the cucumber to the cane. Leaving it loose to allow for growth. As the cucumber becomes well supported at the top I will remove some of the ties nearer the bottom.
It is important you don’t tie this too tight as it can restrict the growth of the plant. They can also rub and cause a scab where disease can get into your plant.
Also, trim off all side shoots so all the plant growth is off the main stem. Cucumbers love sending out side shoots but they are not needed and just take up the plants energy.
This method involves suspending a taut piece of string from the roof of your greenhouse to the floor. The cucumber then grows up this string vertically. I have never used this method myself but I will be trying it out next year. This is also a really common method for growing tomatoes.