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Acanthaceae · Care Guide USDA 9-11

Muicle

Justicia Spicigera

Muicle, or Justicia spicigera, is a vibrant flowering plant native to Mexico known for its tubular red-orange flowers that attract hummingbirds. It's a popular choice for gardens and landscapes, providing a tropical feel and attracting pollinators.

IntermediateMuicle thrives in partial shade to full sun, ideally receiving 4-6 hours of direct sunlight dailyMuicle prefers consistently moist soil but should not be waterloggedModerate growthMuicle can reach a mature size of 2-3 feet tall and 1-2 feet wide.
Care

Everything it needs

9 essentials at a glance

Watering

Muicle prefers consistently moist soil but should not be waterlogged.

Water every 1-2 weeks, allowing the top inch of soil to dry out between waterings. In the growing season (spring and summer), increase frequency to weekly. Signs of over-watering include yellowing leaves and root rot, while under-watering may cause wilting and leaf drop.

Light

Muicle thrives in partial shade to full sun, ideally receiving 4-6 hours of direct sunlight daily.

It can tolerate some shade but may not flower as profusely. Avoid placing it in deep shade as this can hinder growth and flowering.

Soil

The ideal soil for Muicle is well-draining, rich in organic matter with a pH range of 6.0 to 7.0.

A potting mix that includes peat, perlite, and compost is recommended to ensure proper drainage and nutrient availability.

Humidity

Muicle prefers moderate to high humidity levels (40-60%).

To increase humidity, consider misting the leaves or placing a humidity tray filled with water and pebbles beneath the pot. Signs of low humidity include browning leaf tips and leaf drop.

Temperature

Muicle thrives in temperatures between 65-80°F (18-27°C) and is hardy in USDA zones 9-11.

It can tolerate brief periods of cooler temperatures but should be protected from frost. In winter, ensure it is kept in a warmer environment to prevent stress.

Fertilizing

Use a balanced liquid fertilizer with an NPK ratio of 10-10-10 every 4-6 weeks during the growing season.

Reduce feeding in fall and winter when growth slows. Signs of nutrient deficiency include yellowing leaves (nitrogen deficiency) and poor flowering (phosphorus deficiency).

Pruning

Prune Muicle in early spring to encourage bushier growth and remove any dead or damaged stems.

Use sharp, clean pruning shears to make clean cuts. Deadheading spent flowers can promote additional blooms throughout the growing season.

Repotting

Repot Muicle every 1-2 years or when it becomes root-bound.

Choose a pot 1-2 inches larger in diameter. Signs it needs repotting include roots growing out of the drainage holes and stunted growth. To repot, gently remove the plant from its current pot, loosen the roots, and place it in fresh potting mix.

Propagation

Muicle can be propagated through stem cuttings or seeds.

For stem cuttings, take 4-6 inch cuttings from healthy stems, remove lower leaves, and place them in a moist potting mix. Keep the cuttings in a warm, humid environment until roots develop, which typically takes 4-6 weeks. Seeds can be sown in spring after the last frost.

Troubleshoot

When it's unhappy

Yellow leaves

Why it happens

Over-watering or nutrient deficiency.

How to fix it

Check soil moisture and adjust watering schedule. Fertilize with a balanced fertilizer if nutrient deficiency is suspected.

Wilting leaves

Why it happens

Under-watering or extreme heat.

How to fix it

Water the plant thoroughly and ensure it is not exposed to direct, harsh sunlight for prolonged periods.

Poor flowering

Why it happens

Insufficient light or nutrient deficiency.

How to fix it

Ensure the plant receives adequate sunlight and consider fertilizing with a phosphorus-rich fertilizer to encourage blooms.

Browning leaf tips

Why it happens

Low humidity levels.

How to fix it

Increase humidity by misting the plant or using a humidity tray.

Root rot

Why it happens

Over-watering and poor drainage.

How to fix it

Allow the soil to dry out and improve drainage. If severe, repot the plant in fresh, dry soil.

Seasonal

Care through the year

Spring

In spring, prune back any dead stems and begin fertilizing every 4-6 weeks to encourage new growth and blooms.

Summer

During summer, ensure consistent watering and monitor for pests. Provide adequate light and humidity for optimal growth.

Fall

In fall, reduce watering as growth slows down. Continue to fertilize until late fall, then stop for the winter.

Winter

In winter, keep Muicle in a warm location and reduce watering frequency. Avoid exposing it to cold drafts or frost.

Toxicity & Safety

Muicle is considered non-toxic to pets and children. However, ingestion of large quantities may cause mild gastrointestinal upset. Always consult a veterinarian if ingestion occurs.

FAQ

Good to know

Why are my Muicle leaves turning yellow?

Yellow leaves on Muicle can indicate over-watering or a nutrient deficiency. Check the soil moisture and adjust your watering schedule accordingly.

How often should I water my Muicle?

Water your Muicle every 1-2 weeks, allowing the top inch of soil to dry out between waterings. Increase frequency during the growing season.

What light conditions does Muicle prefer?

Muicle thrives in partial shade to full sun, ideally receiving 4-6 hours of direct sunlight daily for optimal growth and flowering.

How do I propagate Muicle?

Muicle can be propagated through stem cuttings or seeds. For cuttings, take healthy stems, remove lower leaves, and place them in moist potting mix.

What type of soil is best for Muicle?

Muicle prefers well-draining soil rich in organic matter, with a pH range of 6.0 to 7.0. A mix of peat, perlite, and compost works well.

When should I prune my Muicle?

Prune your Muicle in early spring to encourage bushier growth and remove any dead or damaged stems. Deadheading spent flowers can also promote more blooms.

Is Muicle toxic to pets?

Muicle is considered non-toxic to pets and children, but ingestion of large quantities may cause mild gastrointestinal upset.

Pairings

Grows well with

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