Q: A couple of years ago we came upon seeds for mustard greens, which we sowed in early spring. It added a pleasant “tingle” when mixed with salad greens, but we can’t remember the name of the seed. Can you help?

A: ‘Southern Giant’ and ‘Giant Red’ are available at garden centers. You might also try ‘Mizuna’, a Japanese variety. In my opinion, chopping a leaf or two into shreds and mixing with other salad greens is preferable to adding whole leaves.