I want to grow early zucchinis in my hot house. I have seen a commercial grower do this and the technique he was using eliminated the spreading nature of these plants. He had them tied up much as one does a tomato plant. I have tried this but without success. What tying product should I use to eliminate breakage of the tender stems? What pruning technique do you suggest? Any other advice would be much appreciated. I would also like to do the same with capsicums.