Coneflowers in particular are fairly drought-tolerant plants. Got one round of blossoms, but can't get it to bloom again. I bought a seedling vine, out in a well drained pot, used excellent potting soil, and miracle grow to feed it. The problem i'm having is that during the day they tend to wilt and the leaves curl, almost as if they don't have enough water, the cone flowers are … You can deadhead, or clip off old blooms, to encourage the plant to keep blooming. The more water they get, the taller they get. Plant black-eyed susans in any well drained soil in full sun (or light partial shade). These simple and bright daisy-like flowers are native to the entire U.S. and parts of Canada. The black-eyed susans usually need at least an average amount of water. Propagating Black-Eyed Susan . In this guide I will show you how to germinate the seeds step by step. Black-eyed Susans can be started indoors, from seed. Black-eyed susans are part of the sunflower and aster family of flowers. Black-eyed Susan vine plant is a tender perennial that is grown as an annual in temperate and cooler zones. Some black-eyed susan varieties are perennial flowers that die back in the autumn and grow again in the spring. Wait for about 30 to 60 minutes before digging out the plant. Perennial varieties will germinate best if the seed containers are kept in the refrigerator or a similarly cold place for four weeks after seeding. Use a water hose to thoroughly saturate the plant and soil area where your black-eyed Susan is planted. Black-eyed Susan vine care is most successful when you can mimic the plant’s native African climate. Rich soil, too much moisture, and too much shade are not ideal. They are planted in good soil that is well drained and they get full sun. Once established, Black-eyed Susan plants bloom better if you water occasionally during dry spells. Start seed about six to eight weeks before the last expected frost. Of course, you could use an old galvanized can and water from the rain barrel if you want to make the whole … I live in Zone 5 where climbing Black Eyed Susan is an annual or indoor plant if taken inside in the winter. I divide them and give away … Mine thrive on neglect. Water slowly and allow it to thoroughly saturate the root system so that the plant will be hydrated and fortified for the move. It's growing like gangbusters, but no … It really takes a few days for them to perk up. They always look horrible when they are transplanted, especially in heat. Generally plants should be watered only once a week (or twice, if extremely dry, and they are new transplants.) The won't get hugely tall, but they might flop over if they have too much water. I know it's much easier to spray your entire flowerbed with a hose than it is to water each individual plant at its base, but overhead watering almost guarantees rust and mildew on black-eyed Susan. 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