Oriental hybrid lilies known as Casa Blanca lilies (Lilium ‘Casa Blanca’) have pure-white blossoms that range in size from 8 to 10 inches and have a sweet fragrance. This low-maintenance lily cultivar may be grown in USDA plant hardiness zones 5 through 8, according to the United States Department of Agriculture.
Planting Casa Blanca Lilies
Your lilies should be planted in a position that receives full sun to partial shade and has soil that drains well. If you live in an area with heavy, damp soil, the South Dakota State University Extension suggests that you give putting them on a raised bed some thought. The Missouri Botanical Garden recommends adding mulch to areas of the soil where the roots are exposed to direct sunlight. This will help maintain moisture levels in the soil while also preventing the roots from overheating.
In order to guarantee that there is an adequate supply of organic material, you should amend the soil with compost if necessary. According to the North Carolina State University Cooperative Extension, lilies thrive on soil with a pH that is lower than 6.0. In order to lower the pH of the soil, Cornell University Cooperative Extension recommends doing a soil test and then adding sulphur, iron sulphate, or aluminium sulphate, depending on the results of the test.
Planting depth for lily bulbs should be around 8 inches, and they should be arranged in tiny groups of three a distance of 12 inches apart. Because bulbs need a period of cold weather in order to blossom, planting should take place either early in the spring or in the autumn at the latest.
Caring for Casa Blanca Lilies
Be sure to give your lilies consistent waterings to maintain a wet soil, and prevent either the soil or the bulbs from becoming dry. When the weather is dry and the growth season gets underway, there is a greater need for water. The University of Missouri Integrated Pest Management recommends using a low-nitrogen fertiliser once a year in the spring when new growth is beginning to sprout. An example of such a fertiliser would be a 5-10-5 fertiliser. Always apply the product in accordance with the directions provided on the packaging.
The Casa Blanca lily plant may reach a height of up to 4 feet and is susceptible to damage from gusts of wind. You should plant them in a sheltered spot or beside other plants that may provide a hand in holding up the tall blossoms. After the lilies have bloomed, remove the spent blooms without disturbing the foliage. It is time to prune the plants after the leaves and stems have died down completely in the autumn. The University of Florida IFAS Gardening Solutions recommends that before you prune the lilies, you should disinfect your pruning shears by cleaning them down with ethanol or isopropyl alcohol. This will prevent the spread of disease.
Casa Blanca Lily Plant Problems
The rot of lily bulbs may be caused by soil that is too damp. If you observe that the soil does not drain effectively, be sure not to overwater the plants and add organic material to the soil instead. The lily mosaic virus can infect Casa Blanca lilies, just as it can infect other types of lilies. According to the Missouri Botanical Garden, there is no treatment available after your plant has been infected with this virus once it has been transmitted by aphids.
There is also the possibility that lily leaf beetles may attack your plant. You may remove the beetles by hand from the plant if there are just a few of them. The University of Massachusetts Amherst recommends using a pesticide if there is a significant amount of an insect population that has to be controlled.
If you have a cat, you should not plant a Casa Blanca lily in a spot where the cat can get to it if you have a Casa Blanca lily plant. According to research conducted at Colorado State University, lilies are particularly poisonous to cats and may lead to acute renal failure. Early symptoms include a significant increase in saliva production as well as vomiting. Ingestion of any part of the lily plant may be fatal to cats if they are not treated as soon as possible.