The coneflower maintenance level is about as low as it gets for a flowering plant. These are among the easiest perennials you can grow. Once your plants settle in after their first season, they thrive with very little help from you. You don't need to baby them at all to get great blooms every single summer. They handle themselves like champs in almost any garden setting you put them in.
I have a row of coneflowers that went through three weeks of 100+ degree heat last summer without a single extra watering from me. They kept right on blooming while my roses wilted and my hostas burned. In my experience, no other flowering plant in my garden handles neglect as well as these do. I don't spray them, I don't pamper them, and they still look great from July into October every single year.
NC State Extension spells out why coneflowers rank so high as a low maintenance perennial. They resist deer, drought, dry soil, heat, humidity, poor soil, and salt. That list covers almost every common problem you run into as a home gardener. Most plants fight one or two of those issues at best. Coneflowers shrug off the whole list without breaking a sweat. You don't have to plan around their weaknesses because they just don't have very many to worry about.
Easy coneflower care boils down to just three tasks spread across the whole year. First, you apply one round of 12-6-6 fertilizer in early spring when new growth starts to show up. Second, you can deadhead spent flowers in summer to keep new blooms coming, but this step is optional. Third, you divide your clumps every 3 to 4 years to keep them strong and full. That's it. Three tasks make up your entire annual care list for these plants. You could set a timer for each one and still have time left over to enjoy your coffee on the porch.
Clemson Extension adds one more detail worth noting about watering. During long dry spells, give your coneflowers about 1 inch (2.5 centimeters) of water per week. But if you get normal rain, you can skip this step. Your plants will pull through most dry stretches on their own thanks to deep root systems that reach far down into the soil for water. You save time and money on your water bill by growing plants that don't need constant drinks from your hose. That's a big win for your wallet and your schedule at the same time during the busy summer months.
Here's what you can skip without hurting your plants at all. You don't need to spray for pests since most bugs leave coneflowers alone. You don't need to stake them if they get enough sun. You don't need to cut them back in fall since the dried stems feed birds and shelter bees. You don't need to add compost every season or fuss with your soil pH. Your coneflowers just want sun and drainage and they handle the rest on their own. Compare that to roses or dahlias that eat up your entire weekends with their long list of demands.
The coneflower maintenance level makes this plant great for busy people and new growers. You get weeks of bold summer color without the hours of work that most flowers demand from you. If you want a garden that looks great without eating up your free time, coneflowers belong at the top of your planting list. You will spend more time enjoying them than you ever spend working on them, and that's exactly how a garden should feel.
Read the full article: Purple Coneflower Growing Guide
