Planting seeds during the heat requires that you visit your raised bed and check your seed (and new seedlings) at least twice a day — early morning and late afternoon. No need to keep the soil wet and soggy, but the seed should be swollen with water.
Original article: https://www.reviewjournal.com/life/home-and-garden/surface-mulch-helps-when-during-summer-planting-2769863/