I've only been at this 2-3 months, but here is what I've experienced so far. I currently have 20-25 milkweed plants of which 9 are propagations not suitable as a host plant yet. Problem is that more eggs and cats are being produced faster than my milkweed can regrow here in South Florida. It seems that it takes a bushy plant (12 - 18 inches) to fully feed 1 - 3 cats..... and they strip most of the leaves and gnaw down the stalks. I usually have more than 3 on a plant and end up having to move the growing cats from one plant to another. The more milkweed in the ground, the more eggs and cats there are... sorta snowballs. Inside I currently have 11 chrysalis, 6 cats (small to large), 4 eggs just hatched in a dish, and many new eggs remaining on the plants outside.