I've watched a few YouTube videos on the subject of growing chillies. In one of the videos the author is growing several varieties of chillies in the same greenhouse which is what I'm doing.
To prevent cross-pollination they tie mesh "baggies" around the branch/stalk that hasn't yet flowered but has a bud, i.e. before flowering.
My question is, do I need to mesh bag every bud branch/stalk, on every plant, in my crop to keep my four or five chilli different varieties from cross pollinating (these will all reside in the same greenhouse)?