by Heather Stone
Mexican Sunflower, Tithonia rotundafolia is a must for the butterfly garden and is a favorite of our beloved monarch butterfly. This 4-6’ tall annual (perennial in USDA zones10-11) is covered in vibrant orange flowers the monarchs can’t resist. But it’s not only a favorite of monarch butterflies. Mexican Sunflower is also equally adored by many other butterfly species including painted ladies, fritillaries, eastern tiger swallowtails, giant swallowtails and more. Honeybees, bumblebees and hummingbirds flock to these nectar-rich flowers as well.
Mexican Sunflowers are easy to grow. Plant seeds indoors 1-2 months before your average last frost date or directly in the garden in late spring when the soil has warmed. Once germinated, these plants take off reaching heights of 4-6’ by 3-4’ wide so place them in the back of the border. Staking these tall plants helps to avoid any toppling over. The vibrant orange blooms appear mid-summer and last until the first frost. Deadheading every 2-3 days ensures continual bloom, equaling more visitors. Mexican sunflowers make great cut flowers too and are easy to grow in containers. Don’t leave this beauty out of your pollinator garden.
Check out this cool video of Monarch butterflies enjoying the blossoms of Mexican Sunflower.