If you have an asparagus patch this is the time to give a light till over the top and put down a pre emergent and some fertilizer. The pre emergent will stop weeds from seeding in and the fertilizer will give those new stalks a healthy start!
If you have a strawberry patch, this is the time to remove the mulch, pull any perennial weeds that have started, and sprinkle a pre emergent. You might want to add some compost to the patch and some fertilizer. If your patch is starting to die out in the center, till the center up and take some of the new runners from the outside and replant them in the center.