I know this post is about the “butterfly” season, but I just wanted to post something that might be helpful.
I learned the hard way. It took me 3 seasons to find out when a plant blooms, it gives new insects. At this point you can do one of two things: after collecting, you can leave the flowers be and hope your friends share (this could be a long wait) or grow new plants and have new insects appear. I chose to do the latter.
If you want to accomplish seasonal tasks faster, find a real physical friend to share. Keep sharing insects back and forth. At the same time, it is good to build up an inventory. Keep planting after you’ve collected and harvested. Keep in mind the amount you share. The more you share, the more seeds you get back. With this being said, try to concentrate on sharing one type of insect at a time. The more of one type being shared will increase your odds of capturing that type. This held true for the past season. The “navy ladybugs” were a pain to catch.
I hope this helps anyone trying to accomplish the seasonal tasks.