Tiger lily (Lilium lancifolium or L. tigrinum) is an herbaceous perennial that grows from bulbs that produce strappy leaves and long stalks yielding colorful, stately flowers in the summertime. You can plant the bulbs in the fall or spring and expect blooms by mid-to-late summer. The orange flower petals are recurved and are speckled with dark spots. The plants are especially eye-catching when you group a few bulbs together or use them as a border. It is a more profuse bloomer than most lilies, producing as many as ten flowers per stem.