Master Gardener: Heirloom tomato tips and more on citrus pruning

Q: Last year I planted several heirloom tomato varieties. They grew well, but did not produce many tomatoes. My Brandywine plant was beautiful and healthy-looking, but only produced one tomato. I thought heirloom varieties were better than ordinary hybrids. What is going on?
A: In the last few years, vegetable and flower varieties labeled “heirloom” have become popular. The California Master Gardener Handbook defines an heirloom as “a crop variety or cultivar documented to have