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My home keyboard is fixed and I can type in Chinese but can't do that during the day.
Yes, lavender does repel mosquitos but not as effectively as mosquito tree does. Fox glove eats mosquito and mine is in full bloom now. I will post the picture this evening. Fox glove has three main colours but each flower has different stripe. It is a good idea to spread lavenders in between other flowers, I suppose. But I only like one clump for one kind to avoid the chaotic appearance. That is purely a personal taste.
Secondly, I am not saying that mixed colours are not good. In fact, a lot of people like mixed colours and there is absolutely nothing wrong with that, absolutely. However, unlike many flowers and plants, the nobility of roses lies in authenticity and purity. Cross-pollination is caused by bees.