I planted salvias approx. 7-10 days ago (very healthy and in a flat) and pruned the flowers back as I was planting. I watered them then and every day after due to the very high temps. Did not water during that time if it rained, which it did. I now see each plant has some leaves that are yellow and not that great green color. Too much watering? Something else? I would appreciate some help. Thank you.