Water slowly and allow it to thoroughly saturate the root system so that the plant will be hydrated and fortified for the move. The won't get hugely tall, but they might flop over if they have too much water. They always look horrible when they are transplanted, especially in heat. Black-Eyed Susans belong to the genus Rudbeckia, which contains over 25 species of flowers.Most of these species will produce flowers with yellow petals and dark black centers (and very showy). Perennial varieties will germinate best if the seed containers are kept in the refrigerator or a similarly cold place for four weeks after seeding. The black-eyed susans usually need at least an average amount of water. You can deadhead, or clip off old blooms, to encourage the plant to keep blooming. 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 … In this guide I will show you how to germinate the seeds step by step. Plant black-eyed susans in any well drained soil in full sun (or light partial shade). Once established, Black-eyed Susan plants bloom better if you water occasionally during dry spells. Black-eyed Susan vine plant is a tender perennial that is grown as an annual in temperate and cooler zones. Of course, you could use an old galvanized can and water from the rain barrel if you want to make the whole … Black-eyed susans are part of the sunflower and aster family of flowers. Start seed about six to eight weeks before the last expected frost. Black-eyed Susan vine care is most successful when you can mimic the plant’s native African climate. Coneflowers in particular are fairly drought-tolerant plants. They are planted in good soil that is well drained and they get full sun. You can also grow the vine as a houseplant but be wary as it may grow to 8 feet (2+ m.) in length. These simple and bright daisy-like flowers are native to the entire U.S. and parts of Canada. 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. Generally plants should be watered only once a week (or twice, if extremely dry, and they are new transplants.) I live in Zone 5 where climbing Black Eyed Susan is an annual or indoor plant if taken inside in the winter. It's growing like gangbusters, but no … Some black-eyed susan varieties are perennial flowers that die back in the autumn and grow again in the spring. Black eyed susans really do well (after they are established) in mediocre soil. Wait for about 30 to 60 minutes before digging out the plant. 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