Sophora secundiflora — an easy houseplant, prefers full sun light
SPECIMEN · FROM THE LIBRARY
Sophora secundiflora

Sophora Secundiflora

Updated · 60 observations
ON THIS PLANT

Sophora secundiflora, commonly known as Texas mountain laurel, is a small evergreen tree or shrub native to the southwestern United States and northern Mexico. It typically grows to a height of 10-20 feet with a spread of 10-15 feet. The plant features dark green, glossy leaves that are leathery in texture and grow alternately along the stem.

In early spring, Texas mountain laurel produces clusters of fragrant purple-blue flowers that resemble grape hyacinths. These flowers are followed by long seed pods containing bright red seeds, which are toxic if ingested.

Texas mountain laurel thrives in well-drained soil and prefers full sun to partial shade. While it is drought-tolerant once established, it benefits from occasional watering during prolonged dry spells.

This plant serves several purposes, including as an ornamental tree or shrub in gardens and landscapes owing to its attractive foliage and fragrant flowers. Additionally, its wood is durable and resistant to decay, making it suitable for carving or furniture making.

Overall, Sophora secundiflora is a beautiful plant with many desirable qualities, making it popular among gardeners in the southwestern United States.

THE NAME

Texas Mountain Laurel: This beautiful plant signals the arrival of spring. It produces stunning flowers with a fragrance reminiscent of grapes, and its leaves resemble those of the laurel plant. As one of its native regions is Texas, it is known as the Texas Mountain Laurel.

A note from PlantMom

Texas mountain laurel shows strong resistance to disease and is typically not susceptible to illnesses. Care-wise, this plant is fairly low-maintenance. When grown outdoors it needs little watering, and larger specimens generally do not require pruning. Smaller plants, however, should be pruned after they finish blooming. Texas mountain laurel is appropriate for anyone with an outdoor area, such as a garden or deck, and does not demand much care experience.

— PlantMom
CARE GUIDE

How to keep Sophora Secundiflora.

Light

Texas mountain laurel grows best in bright daytime sunlight. It can also tolerate lower light levels but will show less vigorous growth. Sufficient light supports its health and development, while too little or too much light can hinder its ability to thrive. It originated in habitats with abundant sunlight.

Water

Texas mountain laurel, native to arid regions, is drought-tolerant and thrives in dry conditions. It prefers to be watered infrequently, about once every 1-2 weeks, and needs well-draining soil to ensure healthy growth. Commonly grown outdoors, this evergreen plant requires careful attention to soil type to prevent root rot.

Temperature

Texas mountain laurel is a woody plant of temperate regions that prefers temperatures of 59 to 100 ℉ (15 to 38 ℃). It is native to Texas, where temperatures can range from 32 to 100 ℉ (0 to 38 ℃) in winter and summer, respectively. To keep the plant healthy, it is recommended to reduce watering during hot summer weather to prevent excessive leaf drop.

Fertilizer

Timing is essential for fertilizing Texas mountain laurel. Apply fertilizer in early spring and continue monthly until early summer. Fertilizer promotes attractive blooms and supplies energy during both dormant and active growth periods.

Pruning

To help Texas mountain laurel thrive, prune it in late spring. This promotes better air circulation and sunlight exposure. Remove dead wood and seed pods to prevent the plant from becoming invasive and to encourage healthy growth. Regular care also reduces the risk of pests and enhances the plant's vibrant appearance, making your landscape more manageable.

Pot & Repot

When repotting Texas mountain laurel, select a pot 1–2 inches (2.5–5.1 cm) larger with ample drainage. Use a well-draining potting mix. Repot in spring or fall, making sure the root ball sits slightly lower than the rim of the flower pot. Water thoroughly after repotting and place it in a warm spot with indirect sunlight.

CHARACTERISTICS

Botanical profile.

Plant Type
Shrub
Life Cycle
Perennial
Genus
Sophora
Family
Fabaceae
Hardiness Zone
8-12
Mature Height
4.57 m to 6.1 m
Mature Spread
3.05 m to 3.66 m
Leaf Color
Green
Leaf Type
Evergreen
Flower Color
Violet, Purple
Flower Size
7.62 cm to 15.24 cm
Bloom Time
Spring
Planting Time
Spring, Autumn
Harvest Time
Late spring, Early summer, Mid summer
ALSO KNOWN AS

Other names.

en Texas Mountain Laurel en Mescal bean en Frijolillo en Moutain Laurel
FREQUENTLY ASKED

Reader questions.

How should I water my Texas mountain laurel?

Your Texas mountain laurel doesn't require a specific watering method, so you can use any common tool like watering cans, hoses, or cups. It's important to water the plant by applying the water directly to the soil. Make sure to evenly moisten all areas of the soil to provide water to the entire root system. Filtered water is preferable as tap water may contain harmful particles. Also, it's best to use water at room temperature or slightly above, as extreme temperatures can be a shock to the plant. However, the Texas mountain laurel generally tolerates different types of water well.

Why should I put fertilizer on my Texas mountain laurel?

There are several important reasons to fertilize a Texas mountain laurel. One of the most obvious reasons is that it helps the plant produce beautiful blooms. Fertilizing in early spring is the best way to ensure excellent flowers during that season. Additionally, fertilizer provides the plant with plenty of energy that it can store in the ground during its dormant growth phases. Giving the plant extra nutrients during fall planting or late spring will help it hold more energy to use once active growth resumes.

What are the sun requirements for Texas mountain laurel?

Texas mountain laurel thrives best with ample sunlight during the day, preferably under full sun conditions which means above 6 hours of sunlight a day. It can also tolerate partial sun, about 3-6 hours of sunlight, but may show less vigor in growth compared to full sun exposure. It's essential to observe how sunlight moves through your garden to select optimal spots that offer a balance of light and shade, ensuring the plant's health and happiness.

What is the preferred temperature range for Texas mountain laurel?

Texas mountain laurel, scientifically known as Sophora secundiflora, thrives in a temperature range of 59 to 100°F (15 to 38°C). This temperate woody plant is naturally accustomed to the varied temperatures of Texas, which can fluctuate from 32 to 100°F (0 to 38°C) across the winter and summer seasons. To maintain the plant's health, especially during the intense heat of summer, it is advised to lessen watering efforts to mitigate excessive leaf shedding.

If I give my Texas mountain laurel too much or too little water, what should I do?

Outdoor plants, especially newly planted ones or seedlings, are prone to not getting enough water. It's important to consistently water them for a few months while they are still small or recently planted. This is because once the roots are established, Texas mountain laurel can rely on rainfall most of the time. However, when Texas mountain laurel is planted in pots, overwatering is more likely. If you accidentally overwater your Texas mountain laurel, there are steps you can take to remedy the situation. First, stop watering the plant immediately to minimize the negative effects. Then, remove the plant from its pot and check the roots for signs of root rot. If no root rot is found, you can return the plant to its container. If root rot is present, trim away the affected roots and consider using a fungicide to prevent further damage. Finally, repot the Texas mountain laurel in well-draining soil. On the other hand, underwatering is easier to fix. If you notice drooping, dry, or falling leaves, simply water the plant more frequently. Adjust your watering frequency if you notice underwatering occurring.

What is the best time to add fertilizer to my Texas mountain laurel plant?

Proper timing is essential for fertilizing Texas mountain laurel. Applying fertilizer too early while the plant is still dormant is not effective and can result in wasted fertilizer being washed away by rainwater, causing environmental pollution. The first application of fertilizer should be in early spring, followed by monthly applications until early summer.

How can artificial lighting support Texas mountain laurel growth indoors?

When natural sunlight is insufficient, especially during winter or in less sunny spaces, artificial lighting can play a crucial role in supporting Texas mountain laurel's growth indoors. Optimal growth requires adequate lighting, and artificial lights, particularly LED lights, are effective because they can provide specific wavelengths needed by plants. For full sun plants, 30-50W/sq ft of artificial light is recommended, partial sun plants require 20-30W/sq ft, and full shade plants need 10-20W/sq ft. The light source should be placed 12-36 inches above the plant to mimic natural sunlight, and most plants benefit from 8-12 hours of light per day.

How should I protect Texas mountain laurel from cold weather?

Texas mountain laurel has a certain level of cold tolerance and doesn't usually need special care when temperatures are above its minimum tolerable growing temperature. However, in situations where temperatures are expected to drop below this threshold, it's crucial to enact temporary cold protection strategies. This includes enveloping the plant with insulating materials like plastic film, fabric, or similar protective layers to shield it from the cold. Once the weather warms up, these coverings should be removed to avoid any potential damage from overheating or suffocation of the plant.

How frequently should I water my Texas mountain laurel?

Most outdoor plants can grow naturally with rainfall, but if you have limited rainfall in your area, you should water your plants adequately every 2 weeks in the spring and fall. In the summer, you'll need to water more often. During winter, when plant growth slows down and water needs decrease, you can water less frequently or not at all. However, if you have a young or newly planted Texas mountain laurel, you should water it more often to help it establish and grow. For potted Texas mountain laurel plants, there are two main ways to determine watering frequency. One way is to follow a set schedule, watering once a week or once every other week. However, this may not always be suitable as it doesn't consider the specific growing conditions of your plant. Another approach is to water based on soil moisture. Wait until the top two to four inches of soil (about ⅓ to ½ depth of the pots) has completely dried out before watering again. Keep in mind that during summer, when water needs are highest, a predetermined schedule may not be sufficient.

When is it not a good idea to fertilize my Texas mountain laurel?

To ensure the healthy growth and blooming of Texas mountain laurel, it's important to be mindful of its fertilizer needs. Avoid excessive nitrogen in the fertilizer as this can result in more leaves and fewer blooms. Instead, opt for a fertilizer that has a lower nitrogen content compared to other nutrients. It's also crucial to refrain from fertilizing after early autumn as this can encourage excessive growth right before winter, which is not desirable. Moreover, avoid fertilizing during hot and dry periods as dry soil cannot effectively deliver the fertilizer, and this can also stimulate growth that requires more water, which may not be readily available. Ideally, it is best to apply fertilizer earlier in the season when temperatures are cooler. Lastly, be cautious about applying fertilizer to nearby plants or lawns as Texas mountain laurel can absorb excess fertilizer, potentially resulting in an unintentional double-dose.

What are the symptoms of light deficiency in Texas mountain laurel?

Texas mountain laurel may exhibit several symptoms when it does not receive enough light, including smaller new leaves compared to older ones, leggy or sparse growth, increased leaf drop, slower or halted new growth, and lighter-colored new leaves indicating a lack of chlorophyll. Extreme sunlight exposure can lead to chlorosis, sunscald, leaf curling, wilting, and leaf scorching, highlighting the importance of monitoring and adjusting the plant's exposure to light.

What are the symptoms and solutions for Texas mountain laurel exposed to low temperatures?

Texas mountain laurel exhibits a moderate tolerance to cold and performs best when the temperature remains above its suitable growth minimum. During colder months, ensuring the temperature stays above this critical lower limit is key to preventing frost damage. Signs of distress from cold exposure include drooping leaves which, depending on the severity of the cold, can either recover or in worse cases, wilt and detach from the plant. The recommended course of action in such instances is to prune any frost-damaged areas. Before the arrival of more cold weather, it's advisable to wrap the plant with a protective material such as non-woven fabric or cloth and install a windbreak to guard against chilly gusts.

PLATES
Sophora secundiflora leaf
PLATE 01 · leaf
Sophora secundiflora leaf
PLATE 02 · leaf
Sophora secundiflora flower
PLATE 03 · flower
Sophora secundiflora fruit
PLATE 04 · fruit
Sophora secundiflora fruit
PLATE 05 · fruit
Sophora secundiflora bark
PLATE 06 · bark
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