Dianthus (Dianthus selections) is available in a bold red shade that’s perfect for fans of the color. Bonus? Dianthus is known for its lovely fragrance! Plus, attractive foliage keeps the beauty going even when the flowers aren’t blooming. Ideal for containers, these plants do best in full sun or partial shade. Dianthus is hardy in Zones 3 – 9 (depending on type) but certain varieties are commonly grown as annuals.