I would love a beautiful garden this summer. Dividing plants is a great guide to why, when, which & how. Very thorough explanation with a terrific cheat sheet for common perennials. Come have a look & bookmark the cheat sheet.
I may have to try this ***Homemade MIRACLE GROW*** : 1 gallon of water, 1 tbsp epsom salt, 1 tsp baking soda, tsp of Household ammonia. Mix all ingredients together and use once a month on your plants.