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Help for an Overwatered Asti White Flower

The asti white (Ostespermum asti white), or cape daisy, is a type of African daisy that grows in United States Department of Agriculture Hardiness Zones 10 and 11. As with other types of daisies, only moderate amounts of water are required to maintain health. A good rule of thumb is to keep soil moist, but leave no standing water. When overwatered a large number of health problems may result. If an asti has been overwatered, there are a few ways to treat it.
  1. Symptoms of Overwatering

    • Overwatering is a serious concern for most plants, including the asti white. Roots require airflow in order to function properly, and when water is left standing at the base of a plant, this process is damaged. When excessive amounts of water are present, roots drown, and are unable to transport water or nutrition to the stem, leaves or flowers. If left untreated, overall health will decline, and death will often result. Additionally, standing water promotes fungal and bacterial growth, which increases the instance of infection. Diseases including root rot, some blights and mildews are each most problematic in times of heavy rain or humidity.

    Repair Soil

    • In the event that excessive rain does fall, certain soil conditions may result in reduced drainage, which leads to standing water and symptoms of overwatering. Clay soils are heavy and especially prone to poor drainage. Loamy soils, comprised of a combination of ingredients, including nutrient rich organic matter, are ideal for growth. Its lightweight makeup means good airflow and drainage that is not too slow or too fast. To improve soil conditions, growers may simply mix a thorough dose of well decomposed compost into their soil. The mix-in will provide much needed nutrition and prevent plants from becoming too wet. This simple repair should work quickly for either potted or planted asti whites.

    Remove the Plant

    • If amending the soil with organic matter is ineffective, or if the plant is severely damaged, removing it from its location may be necessary. Remove the plant carefully to prevent root damage, and place it onto a stack of newspapers. This material absorbs the access water without damaging roots. If the newspapers become soaked, replace them with dry ones. This process may take a few days, depending on how waterlogged the plant is. Keep the plant in a dim, cool spot and, if present, remove severely damaged foliage. Spray the remaining leaves occasionally with room temperature water. Once the roots dry, you can replant the flower in a more appropriate spot, or in a pot with appropriate soil drainage. Carefully follow the water requirements for the asti.

    Proper Watering

    • How much and how often an asti white needs water will vary depending several factors, most importantly the age of the plant. Newly planted seeds must receive approximately ¼ inch of water for seven to 10 days to promote germination. While transplants will require about the same amount every two to three days for two weeks. Healthy, established astis in good conditions only require an inch or two of water once per week. In warmer temperatures or in areas with lots of sun, a bit more may be needed. Early morning or late evening watering is best, and the top few inches of soil should be dry before more water is given.