Coreopsis, salvia, and coneflowers are the longest blooming perennials you can grow. Reblooming daylilies join this list of color champs. These plants keep your beds full of flowers for three to five months instead of just a few weeks.
I tracked bloom times in my garden for three summers to find the real champions of long flowering. My coreopsis started blooming in May and kept going until October frost stopped it cold. That's five full months of bright yellow flowers from a single plant that needed almost no care from me at all.
Some plants bloom longer because their genes tell them to keep making new flowers all season. Reblooming daylilies push out fresh buds over many weeks. They don't bloom all at once like older varieties do in your beds. Coreopsis and salvia keep making new flowers as long as temps stay warm in your area.
Deadheading triggers extended bloom perennials to put out even more flowers for you all summer. Snipping off spent coneflower heads tells the plant to make new blooms instead of setting seed. Your ten minutes of work each week can add another month or more to your flowering season.
Each of these long bloomers has its own peak season you should know about for planning. Coreopsis runs from May through October in most zones with its sunny yellow flowers. Salvia starts in June and keeps going until your first hard frost kills it back. Coneflowers bloom from June through September if you deadhead them well.
Mix continuous flowering perennials together for color that lasts all season long in your beds. Plant early bloomers like coreopsis in your sunny spots. Add later ones like Russian sage nearby for fall color.
Add a few reblooming daylilies to fill any gaps that pop up between peak times for your plants. In my experience with layering beds, having at least three different long bloomers keeps color going all season. When my coreopsis slows down in late summer, my salvias are hitting their stride.
The coneflowers bridge the gap between them so I never have a week without flowers. I tested this approach over several years to get the timing right for my specific zone. Your local conditions might shift these bloom windows by a week or two in either direction.
Feed your long bloomers every six to eight weeks during the growing season to keep them fueled. Heavy flowering takes energy, and tired plants stop blooming sooner than well-fed ones do. A balanced fertilizer keeps the show going strong without pushing too much leaf growth on your plants.
Water your extended bloom perennials during dry spells to help them keep making flowers for you. Stressed plants often drop buds or stop blooming until conditions improve in your beds. One inch of water per week from rain or your hose keeps most long bloomers happy and full of flowers.
Give your long bloomers full sun if you want the most flowers from each plant in your garden. Most of these champs need at least six hours of direct sunlight to hit their peak bloom count. Shade cuts down on flower numbers even with these tough and easy varieties in your beds.
Space your plants out so air can flow between them and keep disease at bay all summer long. Crowded beds trap moisture and invite fungal problems that can shut down flowering early in your garden. Leave room for each plant to spread to its full size without touching its neighbors on all sides.
Pick up these long bloomers at your local nursery when sales hit in early fall each year. You can often grab them at half price or less as stores clear their stock before winter arrives. Plant them right away and you'll have season-long color waiting for you next spring in your garden beds.
Read the full article: When to Plant Perennials: Expert Guide
