Overview
Plagiobothrys chorisianus var. hickmanii, also known as Hickman's popcornflower, is a plant species that belongs to the borage family Boraginaceae. It is native to California in the United States, where it grows in open, dry areas such as grasslands, chaparral, and oak woodlands.Appearance
Hickman's popcornflower is an annual herb that grows up to 60 centimeters tall. Its stems are hairy and branch frequently. The leaves are lance-shaped with pointed tips and have a rough texture. They are also hairy, with long hairs underneath. The flowers are small and white, with five petals fused together at the base to form a tube. They are arranged in clusters on the tips of the branches and bloom from April to July.Uses
Hickman's popcornflower has a few traditional uses. The Native American Chumash people used the plant to treat skin conditions and relieve itching. The plant has also been used in tea to relieve colds and chest congestion. However, the plant is not widely used today for any medicinal purposes. In addition, Hickman's popcornflower is sometimes used in landscaping as a groundcover or as an ornamental plant in rock gardens. It is a good choice for areas with full sun and well-drained soil.Common Names
In addition to Hickman's popcornflower, this plant is known by several other common names, including Choris' plagiobothrys, Choris' popcornflower, and Hickman's forget-me-not.Light Requirements
Plagiobothrys chorisianus var. hickmanii is a sun-loving plant that requires full to partial sun exposure to thrive. It is commonly found growing on open hillsides and rocky areas that receive ample amounts of sunlight.
Temperature Requirements
This plant is known to grow in a wide range of temperatures but generally prefers a more moderate climate. Average daytime temperatures around 70°F and nighttime temperatures around 50°F are optimal for its growth. Extreme heat can stunt growth and cause premature dormancy.
Soil Requirements
Plagiobothrys chorisianus var. hickmanii prefers well-draining soil and can grow in a variety of soil types, including sandy or rocky soils. The plant is often found growing in areas with alkaline soils where other plants may struggle to grow. While it can tolerate periodic drought, it grows best when soil moisture is consistently present.
Cultivation methods
Plagiobothrys chorisianus (Cham.) I.M. Johnston var. hickmanii (Greene) I.M. Johnston is a hardy plant that can be cultivated in a variety of soil types, including sandy, loamy, and clay soils. If planting from seed, make sure to sow the seeds in the spring or fall, and gently cover with a thin layer of soil. Keep the soil moist until germination occurs.
Watering Needs
This plant can tolerate mild drought conditions, but it's important to keep the soil moist during the growing season. Water the seedlings regularly until they become established, and then adjust watering frequency based on the weather conditions. Avoid watering the plant during rainy periods to prevent over-watering.
Fertilization
Fertilize the plant in the spring using a balanced fertilizer, such as a 10-10-10 or 12-12-12 formula. Apply the fertilizer according to the instructions on the packaging, and ensure that it is thoroughly watered into the soil. Repeat fertilization every four to six weeks during the growing season for optimal growth and flowering.
Pruning
Plagiobothrys chorisianus (Cham.) I.M. Johnston var. hickmanii (Greene) I.M. Johnston typically does not require pruning, but if the plant becomes too leggy or overgrown, it can be pruned back in the late fall or early spring. Use a sharp, sterile pair of pruning shears to remove any dead, damaged, or yellowing foliage. Cut back any leggy stems to encourage fuller growth and more compact form.
Propagation of Plagiobothrys chorisianus var. hickmanii
Plagiobothrys chorisianus var. hickmanii can be propagated through several methods, including seed propagation, stem cuttings, and division of basal offsets.
Seed Propagation
Seed propagation is the most common method for propagating Plagiobothrys chorisianus var. hickmanii. The seeds should be sown in sandy soil mix in the fall or early spring. The soil should be kept moist and placed in a partially shaded area. The seeds will germinate in approximately 14-21 days. Once the seedlings are big enough to handle, they can be transplanted into individual pots and grown until they are large enough to plant in the garden.
Stem Cuttings
Stem cuttings can also be used to propagate Plagiobothrys chorisianus var. hickmanii. The cuttings should be taken in the summer while the stems are still green. Cuttings should be about 4-6 inches long and made just below a node. Remove the leaves from the lower half of the stem and dip the cut end in rooting hormone. Plant the cutting in sandy soil mix and keep it moist. The cutting should root within 2-3 weeks.
Division of Basal Offsets
Propagation through division of basal offsets is a less commonly used method for propagating Plagiobothrys chorisianus var. hickmanii. Basal offsets can be divided in the spring when they are just starting to grow. Carefully dig up the plant and gently separate the offsets from the parent plant. Replant each offset in its own pot until it has established roots and is large enough to plant in the garden.
Disease Management
Plagiobothrys chorisianus var. hickmanii is not known to be highly susceptible to many diseases. However, the plant may experience foliar diseases, such as rust and leaf spot caused by fungi. The use of fungicides can help to manage the diseases.
Pest Management
The plants can suffer from attacks by insects such as aphids, spider mites, and whiteflies. One natural way of controlling pests is to introduce beneficial insects such as ladybugs and lacewings. Insecticidal soaps and neem oil can also be used to control pest infestations. Regularly removing dead plant material, and keeping the plant foliage dry can reduce pest outbreaks.
