2nd Year Maturity. Ruby Bells heuchera seeds promise one of the most tolerant and versatile perennial grows in any garden. Ruby Bells heuchera seeds grow 12-18 inch tall creeping mounds famous for their bright pink and red blooming spikes bursting with ½ inch bell-shaped blooms ideal for invigorating any tired flower bed, walkway, or patio. Ruby Bells are a vibrant and exciting substitute to Baby's Breath in your next fresh cut basket or bouquet. Ruby Bells heucheras are durable, easy to grow from seed, and a low-maintenance starter for kids and novice gardeners.