How to Grow Texas Star Hibiscus | Growing Scarlet Rosemallow

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 Growing Scarlet Rosemallow is super easy if you have the conditions right. Learn How to Grow Texas Star Hibiscus from our practical guide.

Texas Star Hibiscus
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Growing Scarlet Rosemallows in the garden and landscape can be a rewarding experience. Learn all about How to Grow Texas Star Hibiscus. From propagation methods to care tips, and understanding the growing requirements, here is everything you need to ensure its healthy growth and blooming.

Botanical Name: Hibiscus coccineus

USDA Zones: 8-11


Texas Star Hibiscus Plant Information

The Texas Star Hibiscus, scientifically known as Hibiscus coccineus, is a striking plant sought after for its attractive, large, white, and red flowers. It belongs to the Malvaceae family. This vibrant perennial plant is native to the southeastern United States, particularly Texas and neighboring regions.

With a height ranging from 6 to 10 feet, Texas Star Hibiscus features long leaves that are occasionally mistaken for marijuana. This hardy hibiscus variety boasts large, showy flowers that can reach up to 6 inches in diameter. The flowers bloom on tall stems, rising above the foliage and creating a dramatic effect. Texas star hibiscus leaves are dark green, adding to its appeal.

The plant is cherished for its ability to attract hummingbirds and butterflies. The vibrant red blooms of the Red Star of Texas hibiscus act as a magnet for these delightful creatures, bringing added life and movement to your garden. It is also commonly referred to as Red Hibiscus, Swamp Hibiscus, and Scarlet Rose Mallow.

Check out the different varieties of Hibiscus here


Propagating Texas Star Hibiscus from Cuttings

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If you wish to propagate the plant, early summer or spring is the ideal time to do so. Follow these simple instructions:

  1. Take 5-6 inches long cutting from a healthy and mature Star of Texas hibiscus plant. Remove leaves from the bottom.
  2. Dip the cut end in the rooting hormone to encourage faster growth. You can skip this part. 
  3. Poke a hole in the growing medium that is big enough for the cutting so that the rooting hormone does not rub off. Place the cutting and pat the soil around it to secure the stem in its place. 
  4. Water gently to keep the growing medium evenly moist. 
  5. Use a clear plastic bag to cover the container and keep it in a warm spot. The temperature should be 60°F or 15°C and higher. 
  6. You will notice new growth in 8-10 weeks and can transplant the Texas star hibiscus seedling carefully to a bigger container or garden. 

Growing Texas Star Hibiscus from Seeds

Don’t know how to grow Texas star hibiscus from seeds? Follow these steps: 

  • Begin by sowing the Texas red star hibiscus seeds 1 inch deep in a well-draining growing medium. It is best to do this indoors 6-12 weeks before the last frost date.
  • Prior to sowing, soak the seeds overnight. This step helps facilitate water absorption, aiding in germination.
  • Find a suitable location where the container can receive 5-7 hours of direct sunlight each day. It is crucial to maintain moisture in the growing medium, so be sure to water appropriately.
  • With the right conditions, the Texas Star Hibiscus seeds typically germinate within 3-4 weeks.

Here are Simple Seed Germination Tips To Grow Every Seed


Growing Requirements for Texas Star Hibiscus

Texas Star Hibiscus 2
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Sunlight

It is crucial to select a suitable planting location. This sun-loving perennial thrives in well-drained soil with full sun exposure.

For Growing Rosemallow to its full potential, you should provide at least 6-7 hours of full, bright, direct sunlight. However, it is best to place them in a shaded location from the intense heat in the afternoon if you live in a warmer zone (10-11). 

Soil

The Texas white star hibiscus loves to grow in rich, moist soil with excellent drainage. If you have ponds or water features in your garden, it is perfect for growing them around that area for good moisture. 

Here are the best recipes to make the perfect growing medium for your plants

Alternatively, you can mix composted bark, peat moss, or coco coir in sand or perlite in equal parts to encourage the best growth. Prepare the soil by incorporating organic matter and ensuring proper drainage.

Note: It’s recommended to plant Texas Star Hibiscus in the spring after the threat of frost has passed. Dig a hole slightly larger than the plant’s root ball, place the plant into the hole, and backfill it with soil, gently firming it around the base.

Water

Adequate moisture is essential for the healthy growth of white Texas star hibiscus. Water deeply and regularly, ensuring the soil remains consistently moist but not waterlogged.

Here are the best ways to water plants

Aim to provide around 1 inch of water per week, especially during dry spells or in warmer climates.

Temperature and Humidity

The plant thrives in warm climates and prefers temperatures ranging from 70°F to 90°F (21°C to 32°C). This plant is well-suited for the hot and humid conditions often found in its native Texas and other southern regions.

Note: It is important to note that this hibiscus is not frost-tolerant, so it should be protected or brought indoors if temperatures drop below freezing.

The plant enjoys a moderately high level of humidity, preferably around 50% to 60%. This can be achieved through regular watering and ensuring proper soil moisture.

In drier climates or during dry seasons, you may consider using methods such as misting the leaves or placing a tray of water near the plant to create a slightly more humid microclimate.

Here are 10 Ways To Increase Humidity For Houseplants That Work


Texas Star Hibiscus Care

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Don’t know how to care for Texas star hibiscus? We’ve got you covered. 

Fertilizer

To promote vigorous growth and abundant blooms, fertilize your hibiscus plant regularly during the growing season. Apply a balanced, slow-release fertilizer with an NPK ratio of 10-10-10 or a similar formulation.

Here are the Best Fruit Peels You Can Use as Fertilizers

Use a balanced liquid fertilizer, diluted to 1/2 of its strength, once in 6-8 weeks to boost the growth. You can also add compost, rich in potassium, to the soil.

Pruning

Pruning is a beneficial practice for shaping and maintaining the health of Texas Star Hibiscus. In late winter or early spring, prune the plant to remove any dead or damaged branches.

Prune one-third of the selected and crowded branches once or twice a year. It will stimulate the branching of the plant, making it look fuller. Additionally, you can lightly prune the plant after each blooming cycle to encourage branching and promote a compact growth habit.

Pests & Plant Diseases

This variety is generally a hardy and pest-resistant plant. However, like any garden inhabitant, it may face certain challenges.  Japanese beetles, whiteflies, sawfly larvae, mealybugs, aphids, thrips, and spider mites, love this plant.

Should any infestation occur, treat it promptly with an appropriate insecticidal soap or organic pest control method. Regularly inspect the leaves for signs of disease or stress and promptly address any issues to maintain the plant’s health.

This plant also gets affected by many fungal diseases like blight, rust, and leaf spot. Keep in mind not to water at the base of the plant to avoid providing extra moisture to the foliage. 

Have a look at these beautiful Hibiscus pictures from Instagram here


Frequently Asked Questions

1. Is Texas Star Hibiscus Poisonous?

No, these plants are not considered poisonous to humans or pets. However, it’s always best to prevent ingestion and keep plants out of the reach of curious pets or children.

Here are the Best Types of Hibiscus You Can Grow

2. Can I grow Texas Star Hibiscus in Pots or Containers?

Yes, these plants can be successfully grown in pots or containers. Choose a well-draining potting mix and a container that provides ample space for root growth. Ensure the container receives adequate sunlight and water the plant regularly, as potted plants tend to dry out more quickly than those in the ground.

3. How Can I Propagate Texas Star Hibiscus From Seeds?

Propagating the Star of Texas hibiscus from seeds is a viable option. Start by collecting mature seeds from the plant in the fall. Scarify the seeds by gently nicking the outer shell to encourage germination. Sow the seeds in a well-draining potting mix, cover lightly with soil, and keep them consistently moist. Place the pot in a warm location, and germination should occur within a few weeks.

Here are the Most Important Habits Every Indoor Plant Owner Should Adopt

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