Now that we’ve had three days in a row that approached the century mark, it turns out that the lobelias (Queen Victoria) are not as happy as I thought they were. They get a bit droopy if I forget to water them twice a day. Although they were listed as full sun and are planted where they only get that in the afternoon, they apparently are not rated for Texas sun. Sigh.
6/2/08 Update: The Backyard Gardener identified the problem for me. Queen Victoria, “Prefers moist, rich soil and will continue to self-sow once established.” And a table lists “Water Range: Normal to Moist.” Unless you live in a river bottom, nothing in Central Texas can be considered “normal to moist.” Everything here is well drained. This certainly explains my the lovely LQV wants so much water.