If your Cooperia pedunculata (Hill country rain lily) and Habranthus tubispathus (Copper lily) bulbs are sprouting you should go ahead and plant them now. Choose a sunny spot and plant the bulbs 8 inches deep for best bloom or 4 inches deep to encourage bulb division. Oxblood lilies (native to South America) can also be planted now. Moisten the soil thoroughly so that the roots can "catch up" to the sprouting shoots, but then let the soil dry out until spring. Cold weather coupled with continuous moisture can cause bulb rot.
If our occasional rains bring on rain lily and copper lily blooms, collect the black seeds just as the seed capsule begins to open. Plant them just below the soil surface right away because the seed do not remain viable for long. In this way you can soon have a remarkable showing after rains.