One of the main reasons why Zinnias play such an important role in the butterfly garden, besides their easily-accessible nectar, is the fact that they bloom from summer all the way through frost.
To help Zinnias put out new blooms all the way through fall, deadhead spent flowers as they turn brown. This keeps the plant from using its energy to go to seed, and helps it direct energy into producing more flowers! (Effective dead-heading means that the annuals will be less likely to reseed to grow the next year.)
While nectar-rich perennials are staples of low-maintenance pollinator gardens, adding long-blooming annuals to your garden each season will ensure a supply of food to nourish pollinators. Annual flowers fill in with color and nectar, as perennials tend to specific bloom times and will fade after flowering.
Zinnias are an important late-season nectar source for many butterflies — especially Monarchs on their migration journey. To help provide plenty of nectar for pollinators in the fall garden, plant Zinnias with these late-blooming perennials: