TracyWV

Since you said "plugs" I'm thinking that you really do mean plugs, like about 1-2 inches diameter plug a couple or 3 inches tall with a plant less than 9 inches tall? If so then they may be hurting for enough water through out the entire day if planted in full sun even if well watered once a day. I would shade them from direct sun for a couple of weeks until they begin to get some good root growth going then begin to slowly acclimate them to full sun gradually over another week or two before exposing them to full sun all day. Also, if you planted plugs directly into the ground the soil may or may not be loose enough and absorbent enough to hold enough moisture around the plug. If you did not amend the soil with compost and/or peat before planting and cultivate it well into the soil then you may want to do that. You may also want to just plant the plugs into pots a couple inches larger than the plugs with a lite potting mix that retains moisture well, but at the same time also drains well and set them in the shade for for a couple weeks and aclimate slowly to sun then after the root system is more developed transplant to the ground.

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Tracy