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May 15, 2013 · Black spots on black-eyed Susan leaves are a common occurrence and generally present no problems. In some cases, though, they can take over the plants. The writers at Dengarden explain that these spots, which can be caused by fungus or the pseudomonas bacteria, can appear black or have a rusty color.
Coreopsis Verticillata ‘Moonbeam’: The Coreopsis Verticillata ‘Moonbeam’ is a delicate-looking yet tough perennial coreopsis. Its pale yellow, daisy-like blooms and fine, thread-like foliage add a unique texture to the garden.
Mar 30, 2024 · In successfully growing Coreopsis, otherwise known as Tickseed, I focus on the essentials: soil with good drainage, ample sunlight, consistent moisture without waterlogging, and understanding the climatic needs according to hardiness zones. Here’s what I have learned: Soil and Sunlight Requirements
- Glen Chandler
The name tickseed comes from the small, black seeds that resemble ticks. The name calliopsis comes from the Greek words “kallos” meaning beauty and “opsis” meaning sight, referring to the beauty of the flowers. Coreopsis is a popular garden plant due to its long blooming period and low maintenance requirements.
- Watering
- Fertilizing
- Pruning and Deadheading
- Dividing
- Pests and Problems
Water young plants regularly until they become established. Mature plants will tolerate drought and only need watering during long periods of hot, dry weather. (See more drought-tolerant plants.)
Tickseed prefers growing in lean, infertile soil. Fertilizing or amending the soil is generally not needed and may actually inhibit flower production.
Flowering will often begin to wane by midsummer, as the plant begins to devote its energy to seed development. Regular deadheading will encourage continued flowering but can be time-consuming, especially if you have a lot of plants. An easier option is to shear plants back to half their height after they show signs of slowing down, which will usual...
Some coreopsis (especially C. grandifloraand its cultivars) tend to be short-lived perennials and should be divided every two or three years—in early spring or fall—to extend their lifespan. You should also divide coreopsis if you notice that the center of the plant is beginning to die out or it starts to produce fewer or smaller flowers.
Coreopsis has few insect or disease problems. However, it may be susceptible to powdery mildew and other fungal diseases in areas with high humidity. See these tips for preventing and treating powdery mildew.
Why Is My Coreopsis Turning Black? The answer is most likely due to a fungal infection. These thrive on moist leaf surfaces and cause transparent to brown or black spots that disfigure the leaves. How Tall Does Coreopsis Grow? Coreopsis plants typically grow 18 to 24 inches tall, but dwarf forms that only grow 6-12 inches tall are also available.
People also ask
What does Coreopsis look like?
What is a Coreopsis plant?
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Coreopsis, or Tickseed, is a genus of flowering plants native to North and South America. There are over 100 species available and countless hybrids, including annuals and perennials. They are admired for their vibrant, daisy-like flowers and ease of care.
