Sage Description, Plant, Herb, Uses, & Facts Britannica Gardener's Guide to Planting Tulips Kellogg Garden Organics As part of Bringing Nature Home, our campaign to celebrate and encourage biodiversity in our gardens, we've selected plants that are great for wildlife for each month of the year. Our first Vitex, also called chaste trees, produce showy 5 to 7 inch spikes of small lavender blue flowers from late May through June in Louisiana, with a second flush of flowers again in July or early August. Plumeria rubra 'Aztec Gold' (Frangipani)