Origin and Common Names
Lotus argophyllus (Gray) Greene ssp. niveus (Greene) Munz, commonly known as silver bush lupine, is a species of perennial herbaceous plant that is native to the western United States. This plant grows naturally in sandy and gravelly soils, along roadsides, on rocky hillsides, and in other open areas in California, Oregon, Nevada, and Arizona.
Appearance
The silver bush lupine plant typically grows up to 3 feet tall and has silver-grey leaves that are covered in fine silky hairs. The leaves are pinnately compound, with five to eleven leaflets each measuring up to 5 cm long. The plant bears clusters of blue-violet flowers from late spring to summer, which are pea-like and fragrant.
Uses
Native Americans used silver bush lupine as a medicinal remedy for various illnesses, including respiratory and urinary tract infections. The plant was also used for its seeds, which were enjoyed as a food source. Silver bush lupine is currently used for ecological restoration and erosion control. Additionally, it is often grown as an ornamental plant in gardens and parks for its attractive foliage and striking flowers.
Growth Conditions for Lotus argophyllus (Gray) Greene ssp. niveus (Greene) Munz
Lotus argophyllus (Gray) Greene ssp. niveus (Greene) Munz, commonly known as Snow Lotus, is a flowering plant that typically grows in dry and open habitats, such as meadows, prairies, and sagebrush scrublands, in elevations ranging from 500 to 2,500 meters.
Light
Snow Lotus thrives in full sunlight, although it can tolerate some shade. In partially shaded areas, Snow Lotus may produce fewer flowers, and its growth may be slower. Therefore, it is best to plant this species in areas that receive at least six to eight hours of direct sunlight per day.
Temperature
Snow Lotus is native to regions with a continental climate, characterized by hot summers and cold winters. The plant can tolerate temperatures as low as -15°C (5°F) and as high as 38°C (100°F). However, Snow Lotus performs best in regions with moderate temperatures, ranging from 15°C to 25°C (60°F to 77°F) during the growing season.
Soil
Snow Lotus thrives in well-draining, loamy, or sandy soils that are neutral to slightly alkaline (pH 6.5 to 7.5). The plant is adapted to dry conditions and can tolerate drought, but it needs occasional watering during hot spells. Snow Lotus does not do well in waterlogged or poorly drained soils.
Cultivation methods
Lotus argophyllus (Gray) Greene ssp. niveus (Greene) Munz is a hardy plant that grows well in full sun, especially in dry and rocky soils. It is a low maintenance plant that can adapt to different soil types, from clay to sandy soils. When cultivating this plant, make sure that the soil is well-draining to prevent waterlogging. This plant is also drought-tolerant, making it ideal for areas with low rainfall. Propagation of Lotus argophyllus can be done through seeds or cuttings, with seeds being the more common method.
Watering needs
The watering needs of the Lotus argophyllus (Gray) Greene ssp. niveus (Greene) Munz are minimal once the plant is established. It can tolerate long periods without water, but it is essential to water it regularly during the first few months after planting to help it develop its root system. Water the plant deeply once a week, especially during hot and dry periods. Avoid overwatering as it can cause root rot and other fungal diseases.
Fertilization
Lotus argophyllus (Gray) Greene ssp. niveus (Greene) Munz is a nitrogen-fixing plant, which means it has the ability to convert atmospheric nitrogen into a usable form for the plant. However, adding a slow-release nitrogen fertilizer once a year can improve the plant's growth and vigor. Fertilize the plant in the spring before new growth starts to appear. Avoid using fertilizers that are high in phosphorus and potassium, as they can promote leafy growth at the expense of flowering.
Pruning
Pruning is not necessary for Lotus argophyllus (Gray) Greene ssp. niveus (Greene) Munz. However, if the plant becomes too leggy or overgrown, you can prune it back to encourage bushier growth. It is best to do this in the early spring before new growth starts to appear. Use sharp pruning shears to make clean cuts, and avoid cutting into old wood as this can promote disease and rot. Removing the old flower heads can also promote new bloom growth and prevent the plant from expending too much energy producing seeds.
Propagation of Lotus argophyllus (Gray) Greene ssp. niveus (Greene) Munz
Lotus argophyllus (Gray) Greene ssp. niveus (Greene) Munz is a perennial plant that belongs to the Fabaceae family. The plant is commonly known as snow lotus, silver bush lupine, or silky lotus.
Propagation methods
The snow lotus plant can be propagated through various methods such as seed propagation, stem cuttings, and division.
Seed propagation
Seed propagation is the most common propagation method for snow lotus plants. Harvest the seeds from the plant in the fall when the seed pods turn brown. Remove the seeds from the pods and allow them to air dry. After they dry, store the seeds in a cool, dry place until planting them in the spring.
It is recommended to scarify the seeds before planting them to enhance germination. To scarify, nick the seed coat slightly until you can see the seed pulp. Then, store the seeds in warm water overnight.
Plant the seeds in the spring in a well-draining, sandy soil mixture. The seeds should be positioned at a depth of 1/4-inch and spaced about an inch apart. The plants will germinate within two to three weeks, and you can transplant them to a permanent location outdoors when they reach a height of about 3 inches.
Stem cuttings
Snow lotus plants can also be propagated through stem cuttings. Take the cuttings in the spring from newly grown and healthy stems. Cut the stems that are about 6 inches long and remove the lower leaves, leaving only the top leaves intact.
Dip the cuttings in rooting hormone and plant them in a well-draining soil mixture. Water the cuttings lightly, and then cover them with plastic bags or transparent covers to enhance humidity. The cuttings will root within four to six weeks. After that, remove the covers and transfer the cuttings to individual pots. Once they're established in the pots, you can transplant them outdoors.
Division
Snow lotus plants can also be propagated through division. Divide the plant in the spring. Dig up the plant and divide the roots into sections, making sure each section has several stems. Replant the divided sections in a well-draining soil mixture.
Keep the soil moist and place the plant where it can get bright, indirect light. The plant will take root within a few weeks, and after that, you can transplant it outdoors.
Disease Management
Lotus argophyllus (Gray) Greene ssp. niveus (Greene) Munz is generally susceptible to various diseases. Some common diseases that can affect this plant include:
- Leaf spot: This disease is caused by fungal pathogens. It causes brownish spots on the leaves that may enlarge and cause the leaves to fall off prematurely. To manage leaf spot, remove infected leaves and avoid overhead watering.
- Powdery mildew: This is a fungal disease that appears as a white powdery growth on the leaves. It can cause leaves to become distorted and stunted. To manage powdery mildew, remove infected plant parts and improve air circulation around the plant.
- Rust: Rust is a fungal disease that causes yellow or orange blisters on the leaves. The leaves may drop prematurely and may cause significant stress to the plant. To manage rust, remove infected leaves and avoid overhead watering.
Pest Management
Lotus argophyllus (Gray) Greene ssp. niveus (Greene) Munz is also susceptible to various pests. Some common pests that can affect this plant include:
- Aphids: These small, soft-bodied insects can appear in large numbers and suck sap from the plant, causing leaves to yellow and distort. To manage aphids, spray with an insecticidal soap or use a strong jet of water to knock them off the plant.
- Thrips: Thrips are tiny insects that can cause distorted leaves and flowers. They may also transmit viruses. To manage thrips, use yellow sticky traps and spray with insecticidal soap.
- Spider mites: These pests are not actually insects but are related to spiders. They can cause leaves to turn yellow and may spin webs on the plant. To manage spider mites, wash the plant with a strong jet of water and spray with insecticidal soap.
