Q. This summer was the first time I had planted milkweed seeds and I had wonderful results. My question for more seeds is how do I save my hibiscus seed pods for planting next spring? Is there ...

CHICAGO — WGN’s “Plant Daddy” Tim Joyce is back to share some weekend gardening tips, including how to harvest tomato seeds, how hibiscus flowers get their colors and more. Got any questions for Tim?

Q. How do I grow rose mallow from seed? — Norma Turner, Mt. Ayr, Ind. APlants grown from the seed of a hybrid rose mallow, the perennial Hibiscus moscheutos, will result in a new plant unlike the ...