Streptanthus tortuosus is a biennial or short lived perennial plant in the mustard family (Brassicaceae) known by the common names shieldplant, shieldleaf, and mountain jewelflower.
The mountain jewel flower is resistant to disease and is generally not easily affected by illnesses. However, it can be vulnerable to pests and diseases present in its environment. Such infections are typically mild. In terms of care, the plant requires a moderate level of maintenance. Regular pruning is necessary to preserve a good appearance and support healthy growth. Applying fertilizer can also help encourage flowering. The mountain jewel flower is suitable for anyone with outdoor space, such as a garden or patio, and does not demand extensive care experience. It may need more attention when grown indoors.
How to keep Streptanthus Tortuosus.
Light
Mountain jewel flower comes from bright, open habitats and flourishes in full sun. It can tolerate partial sun but prefers direct sunlight for optimal growth. This plant, which may be annual or biennial, is known for its sun-loving nature.
Water
The mountain jewel flower thrives in arid conditions, showing a high tolerance for drought. It typically requires watering just once a week. As an evergreen plant, it maintains its foliage throughout the year. While it can withstand dry periods, providing consistent moisture is important for its optimal growth.
Fertilizer
When most of the Mountain jewel flower's blooms have opened to full size, resume fertilizing. At the height of bloom production, fertilize every three to four weeks, as weather allows. Then, once the Mountain jewel flower begins producing fewer new blooms, stop fertilizing; there's no need to fertilize when the plant can no longer produce more blooms.
Pruning
The Mountain Jewel flower is characterized by its delicate stems and vibrant blooms. It flourishes with light pruning from early to late spring. To ensure healthy growth and maintain its shape, remove any dead branches. This practice improves air circulation, helps prevent disease, and encourages blooming, thereby enhancing the beauty of any garden.
Botanical profile.
- Plant Type
- Herb
- Life Cycle
- Annual, Biennial, Perennial
- Genus
- Streptanthus
- Family
- Brassicaceae
- Hardiness Zone
- 5-9
- Mature Height
- 0.2 m to 1.07 m
- Mature Spread
- 20 cm to 40 cm
- Leaf Color
- Green, Dark Green
- Leaf Type
- Semi-evergreen
- Flower Color
- White
- Flower Size
- 2.54 cm
- Bloom Time
- Mid spring, Late spring, Early summer
- Planting Time
- Spring, Autumn
- Harvest Time
- Summer
Other names.
Reader questions.
How should I water my Mountain jewel flower?
There are several ways to water Mountain jewel flowers, including using a garden hose with a spray nozzle or a watering can. These flowers are not picky about the type of water they receive, whether it's rainwater, tap water, or filtered water. However, it's best to avoid watering them from overhead, as this can harm the leaves and flowers and potentially cause disease. Setting up a drip irrigation system is often the most effective method for watering Mountain jewel flowers, as it ensures even and direct watering to the soil. When watering a container-grown Mountain jewel flower, you can use a cup, watering can, or your tap to target the water directly at the soil.
What do I do if I give too much or too little water to my Mountain jewel flower?
To fix underwatering, water the Mountain jewel flower regularly when you notice it lacks moisture. Overwatering can be worse if not noticed early. It can cause diseases and lead to the plant's decline and death. Prevent this by choosing a well-drained location with enough sunlight to dry the soil. If your potted Mountain jewel flower is overwatered, consider changing to a pot with good soil drainage and enough drainage holes.
How often should I give water to my Mountain jewel flower?
The Mountain jewel flower should be watered regularly during the growing season. In the spring, water once a week, but as it gets warmer, you may need to water two to three times a week. Be careful not to overwater, as too much water can harm the plant. Keep the soil moist but not wet. If your Mountain jewel flower is in a pot, you'll need to water it more often because the soil can dry out faster. Generally, water container-grown plants a few times a week, compared to just once a week for plants in the ground.
How much water does my Mountain Jewel flower require?
When it comes to watering your Mountain jewel flower, there are a few different approaches you can take. Some gardeners prefer to gauge the moisture level of the soil by feeling it, and they suggest watering until the first six inches of soil feel moist. Alternatively, you can follow a specific measurement, typically around two gallons per week, taking into consideration the temperature and rate at which the soil dries out. However, it's important not to overwater by sticking strictly to these guidelines, especially if your plant requires less water for any reason. When growing your Mountain jewel flower in a container, you'll need to adjust your watering method. You can ensure adequate hydration by moistening all layers of dry soil, which can be tested by inserting your finger into the soil. Another indicator is allowing a slight trickle of excess water to drain from the pot's drainage holes.
How can I know if I'm giving enough water to my Mountain jewel flower?
Avoiding overwatering your Mountain jewel flower can be a bit tricky. These plants have deep roots that require weekly soil moistening, but they are also prone to root rot and browning caused by excessive water. Underwatering is less of a concern for your Mountain jewel flower, as they can survive without additional watering for some time. However, if you go too long without watering, the plant may start wilting and its leaves may become dry.
How should I water my Mountain jewel flower during different seasons?
As the seasons change, the water needs for your Mountain jewel flower will also change. During spring, watering once per week is sufficient. However, as the summer heat arrives, you will need to increase the water to about three times per week, especially if your Mountain jewel flower is in a container. Containers tend to dry out faster in warm weather than ground soil. In autumn, when the temperature cools down and the sun is not as intense as in summer, you may need to reduce the water slightly while your Mountain jewel flower is still blooming.
How do I water my Mountain jewel flower as it grows?
The Mountain jewel flower goes through different growth stages throughout the year, each with varying water requirements. Starting with a seed, you should give more water during germination to maintain consistent soil moisture. After a few weeks, as the flower grows above the soil, it will require slightly less water. When the plant is mature, a regular watering frequency of once per week is sufficient. During flower development, you may need to provide a bit more water to support the process.
What's the difference in how you water Mountain jewel flowers inside and outside?
Most Mountain jewel flowers grow outdoors mainly because they grow tall and need more sunlight than indoor locations can offer. If you want to grow them indoors, you might need to water them more frequently because indoor environments tend to be drier due to HVAC units and containers dry out faster than soil in the ground.
