Desert Four O'Clock
Desert Four O'Clock (Mirabilis multiflora) is a colorful and eye-catching houseplant native to the southwestern United States. It has many narrow stems that arise from a single root system. Each stem has several stems of glossy, long-lasting, bright green leaves that are evergreen. This plant produces trumpet-shaped, fragrant blossoms at any time of the day, but very often in the afternoon. Desert Four O'Clock blooms in many colors including yellow, pink, and white with all colors often blooming on the same plant simultaneously. This plant is a favorite amongst many gardeners due to its low maintenance and ability to withstand harsh weather. Little to no care is needed for Desert Four O'Clock to remain healthy and happy.
Desert Four O'Clock isn't particularly fussy in regards to watering needs but does well in well-drained soil. While younger plants may require more frequent watering, once established these plants are quite drought tolerant and can go weeks between watering. Aim to maintain the soil moist throughout growing seasons but let dry out between watering.
Desert Four O'Clock is an incredibly easy plant to take care of and prefers bright, indirect light however it can tolerate lower light levels. Be careful to not expose to too much direct sunlight, as this can cause sunburn or bleaching.
This plant is quite hardy and will do well in temperatures of 50-90 degrees Fahrenheit (10-32° Celsius). It may not flower in colder temperatures, so it should not be exposed to temperatures below freezing.
Desert Four O'Clock does best in dry climates and in low to average humidity levels. Humid conditions can cause mildew issues.
Desert Four O'Clock does best in a well-drained soil mix with a slightly acidic to neutral pH. The best potting mix should include a mixture of sand, perlite and potting soil. This will help the soil to drain well and provide the plant with the nutrients it needs to grow.
Desert Four O'Clock benefits from a light fertilization every couple of weeks during the growing season with a balanced fertilizer. Fertilize lightly in the winter months when the plant is in its dormancy period. Be mindful not to over fertilize, as too much fertilizer can damage the roots and cause salt burn on the foliage.
Aphids, mealybugs, spider mites and scale can all be problematic for Desert Four O'Clock. To manage pests, provide an appropriate environment (e.g. proper lighting, sufficient ventilation, etc.) as well as making sure to inspect the plant regularly. If insects are spotted, remove by hand with small tweezers and soapy water or a shop-bought insect killer. Avoid using any products with large amounts of chemical to not adversely affect the plant.
Desert Four O'Clock does not need much repotting, however it should be repotted every couple of years so that it has access to fresh soil. During the warmer months, repotting can be done as frequently as once a year. When repotting, gently remove the existing soil and repot the plant in a larger container using a fertile and well-draining potting mix. Make sure to use a pot with a drainage hole so that water can escape.
Desert Four O'Clock does not require much pruning, however some maintenance pruning is needed to help the plant remain healthy and encourage bloom. To prune, remove dead, weak or damaged stems any time of year. Be sure to use clean, sharp gardening shears to make it an effective process.
To preserve moisture in the soil, it's a good idea to mulch around the base of the Desert Four O'Clock plant with materials such as wood chips, bark, or gravel. This will help prevent the soil from drying out too quickly and will also help keep the weed population down.
Desert Four O'Clock is the easiest to propagate through stem cuttings in the summer months. To propagate by stem cuttings, take a 4-6 inch piece of stem and remove all of the foliage. Dip the cut end into a rooting hormone and then plant in some moist potting soil. Place a plastic bag over the potting soil and place in a bright area, but out of direct sunlight. Roots should begin to appear after a few weeks, at which time you can move the plant to its permanent pot.
Desert Four O'Clock often requires staking due to its long stems and heavy blooms. Plant in a container that offers enough stability but also allows the plant to spread out and become full. If needed, tie the stems to stakes using twine or string.
Desert Four O'Clock will do best if it is given a rest period in the winter. During the winter when the plant is in its resting period, it should be placed in an area with bright, indirect light. Water very lightly, only to prevent the soil from completely drying out.
Desert Four O'Clock is not toxic to cats or dogs.
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