Thanks for posting this! I've heard that ladybugs are great for gardens; but, I didn't know why. Long ago, a nursery employee told me to plant nasturtium to avoid aphids explaining that the bonus is that nasturtium is beautiful and edible. So, I planted some in my container garden with my Romaine lettuce & greens. I soon found out that she left out the most important fact … nasturtium doesn't repel aphids … it attracts them. So, the strategy is to plant it far from the garden to lure aphids away. I like your method much better.