When you say plant your vegetables densely to prevent weeds and pests from attacking the plants, how much space should there be between plants?
it depends what you are planting. such as a tomato plant two feet from each other is good pepers foot apart. corm space every 12inches dense plant. I always use a product called 7 and 7 and it keeps any bug away with out the harm . I spray my whole yard so i don't have to deall fleas ticks and other crawls.