Plant Alert! Meet the Euphorbia lactea 'Cristata' aka the Coral Cactus (even though it's not technically a cactus ). This wild, wavy beauty is a natural born head turner that looks Plant your poppies when it's cold! Poppy seeds require a period of cold to germinate and grow, so they generally do best when planted in the late fall or early spring. Container Garden Carrots from Seed to Plate Pass the Pistil Best Pot Plants for Container Gardening [with Pictures] Airtasker US