Starting perennials from seeds is an economical approach to populate your garden with enduring plants, offering a wider selection than nursery-bought options. However, delaying the process until spring can significantly postpone their blooming. Whether you collect or purchase them, sowing perennial seeds in the fall can accelerate your enjoyment of their flowers. By following the simple steps outlined below, you’ll have an array of new perennials to add to your garden by the time spring arrives.
Seed packets often recommend a period of refrigeration for perennial seeds, a technique known as moist stratification. This method helps to break the seeds’ dormancy and encourage sprouting. Some seeds are encased in a tough outer coat that hinders water absorption and germination; instructions may suggest nicking or sanding the seed coat to aid sprouting.
Alternatively, you can let nature take care of the process. By sowing seeds outdoors in late fall, winter conditions naturally stratify the seeds and soften the tough seed coats, requiring minimal effort on your part.
Sowing in the fall also lightens your workload for spring gardening, with likely fewer weeds and pests to manage compared to spring planting.
Here are some types of perennials that come in various varieties and are resilient across most USDA Hardiness Zones:
With over 200 species available, there’s a beardtongue (Penstemon spp.) suitable for most gardens. These perennials flower in spring and summer, with heights ranging from 6 inches to 8 feet, depending on the variety. Provide them with a sunny spot and well-drained soil. Zones 3-9
Native to North America, bee balm (Monarda spp.) thrives in full sun or partial shade with moist soil, attracting numerous pollinators. Its flowers, in shades of pink, lavender, and red, start in early summer and last until fall. Zones 3-9
Black-eyed Susans (Rudbeckia spp.) add a dash of color to sunny borders and are excellent as cut flowers. These native plants have a long blooming season, starting mid-summer and continuing until frost, attracting pollinators and birds. Zones 3-11
Blanket flowers (Gaillardia spp.) bloom from summer to fall, drawing pollinators and birds. Their cheerful blooms, ranging from red, yellow, and orange to purple and white, are great for cutting. Plant them in a sunny spot with well-drained soil; they’re also very drought-tolerant. Zones 3-10
Columbines (Aquilegia spp.) feature delicate petals surrounded by contrasting spurs. These versatile plants adapt to various conditions, from sunny rock gardens to moist woodlands, blooming in spring to early summer in colors including white, yellow, blue, pink, red, and purple. Zones 3-9
Coreopsis species may appear delicate but are robust additions to sunny gardens, with flowers in orange, yellow, pink, or red that lure birds and insect pollinators while remaining deer-resistant. Zones 3-9
Hardy geraniums (Geranium spp.), also known as cranesbill, are low-growing, low-maintenance perennials suitable for the front of borders in full sun or partial shade. They flower from spring to mid-summer in various shades of pink, purple, blue, and white. Zones 3-9
Oriental poppies (Papaver orientale) showcase their vibrant, papery petals in mid to late spring, sometimes blooming until early summer. These plants prefer full sun and are best interplanted with other perennials, as they die back in mid-summer. They are drought-tolerant and deer-resistant. Zones 3-7
Note: Oriental poppies are poisonous to humans and pets.
Pincushion flowers (Scabiosa spp.) have delicate blooms resembling pincushions, flowering continuously from spring through fall. Their pink, blue, purple, or white flowers complement mixed beds and prefer full sun, offering deer-resistance and drought-tolerance. Zones 3-11, depending on the species and variety.
Purple coneflowers (Echinacea purpurea), another North American native, are pollinator and bird favorites, thriving in full sun and resisting deer and drought. They blend well with other perennials and ornamental grasses. Zones 3-9
Wait for the first killing frost to pass, but sow your seeds outdoors before the ground freezes. Choose a site that’s easy to water during dry periods and sheltered from drying winds and wildlife. Row covers offer excellent protection, as does a light layer of weed-free straw.
While you can sow seeds directly in your garden, you may have better success by planting them in a designated seedbed or using the seed snail technique. This makes them easier to tend to and minimizes confusion with garden weeds.
Follow package instructions for seed spacing and depth, labeling the seeds as you sow them for identification in spring. Water thoroughly after planting and avoid complete desiccation over the winter months.
Keep an eye out for seedlings in early spring, watering as needed until they’ve produced several sets of leaves. Transplant them to their permanent positions thereafter.
