Butterflies need salt for breeding. By sipping moisture from mud puddles, butterflies take in salts and minerals from the soil. ~ Create a salt lick in your garden and increase the butterfly population. How-to's and links included.
Like the idea of the green house over raised bed. Prolong season, start seed, protection from weather, ease of access as oppposed to diy hoop house? Think of the money you could save with your own green house.
The secret to growing the healthiest most beautiful plants is right in your backyard! Feed your soil! From Elizabeth Murphy, author of the book, Building Soil: A Down-to-Earth Approach: Natural Solutions for Better Gardens & Yards.