Hibiscus schizopetalus
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Hibiscus schizopetalus

Campanilla · Chinese lantern · Fringed Rosemallow · Japanese hibiscus · Coral hibiscus

Tier 1 Difficulty: medium Water: low Light: full_sun
Water every
7 days
Temperature
20–37 °C
Soil pH
6–7
Hardiness
Zone 10–11
Click count
383
Observations
87

Description

Source: leafsnap

Hibiscus schizopetalus is a species of Hibiscus native to tropical eastern Africa in Kenya, Tanzania and Mozambique. Its common names include fringed rosemallow, Japanese lantern, coral hibiscus, and spider hibiscus.

Care Guide

💧 Water Every 7 days

The spider hibiscus flourishes best in environments with high humidity and consistent moisture. To support its lush foliage and vibrant blooms, it requires weekly watering. As an evergreen plant, the spider hibiscus keeps its leaves throughout the year. During hot weather or when grown in containers, it needs more frequent watering to stay healthy.

Suggested frequency: Every 7 days
FAQ
How should I water my Spider hibiscus plant?

To ensure the health of your Spider hibiscus, follow these watering tips: Use filtered water at room temperature or slightly warmer, as tap water may contain harmful particles. The Spider hibiscus prefers warm conditions, so cold water could be a shock. Instead of overhead watering, apply filtered room temperature water directly to the soil until it is fully soaked. This benefits the plant by hydrating the roots and aiding their nutrient absorption.

What should I do if I give my Spider hibiscus too much or too little water?

Overwatering and underwatering can harm your Spider hibiscus, but overwatering is more common. Too much water can cause wilting and yellowing of the stems and leaves. It can also lead to diseases like root rot, mold, and mildew, which can be fatal for your plant. Underwatering is less likely, as this plant can tolerate drought well. But it is still possible, and when it happens, the leaves may become brittle and brown. It's important to recognize signs of overwatering early. Diseases like root rot may become irreversible if you wait too long. If you notice signs of overwatering, reduce watering immediately and check the soil drainage. Replace poorly draining soil with a loose, well-draining potting mix. On the other hand, if your Spider hibiscus shows signs of not getting enough water, simply increase your watering frequency until the signs disappear.

How frequently do I need to water my Spider hibiscus?

If your Spider hibiscus is in a pot, you can check if it needs water by sticking your finger into the soil. If the top two to three inches of soil are dry, it's time to water it. The same method can be used if you have the Spider hibiscus planted outdoors in the ground. In the spring and early fall, you'll typically need to water it once a week using this method. When it's very hot, watering may need to be done twice or more per week. However, it's important to note that mature Spider hibiscus plants can handle dry conditions well.

How much water should I give my Spider hibiscus?

To effectively water your Spider hibiscus, don't be afraid to give it a substantial amount of water. Make sure the top two to three inches of soil are dry before watering. It's best to water the plant thoroughly, ensuring the soil is completely saturated. You should add enough water for it to flow out of the drainage holes at the bottom of the pot. If you don't see any excess water draining, you may not have provided enough water. However, be cautious not to let water accumulate in the soil, as this can harm the plant. On the other hand, if water is not draining properly, it could indicate poor soil drainage, which is harmful to the plant's health. If the plant is outdoors, it typically requires about 1 inch of rain per week.

How do I give water to my Spider hibiscus as it grows?

The water needs of the Spider hibiscus can vary depending on its growth stages. For instance, when your Spider hibiscus is in its early years or has been recently transplanted, it will require more water than usual. During these stages, the plant expends a lot of energy on growing new roots that will support future growth. These roots perform best with slightly more moisture than during later, more mature stages. As your Spider hibiscus becomes more established, it will require less water. Additionally, during the bloom period, the plant's flower development necessitates a significant amount of moisture, meaning you may need to provide additional water at this time.

☀️ Light Full sun

Spider hibiscus prefers locations where it gets strong sunlight throughout the day. It can tolerate periods of partial shade, but too much shade can slow its growth and make the foliage pale. It originates from environments with abundant sun exposure, and excessive sunlight can cause leaf scorch.

Ideal: Full sun
FAQ
What are the sunlight requirements for Spider Hibiscus?

Spider Hibiscus requires full sun to thrive, meaning it should receive above 6 hours of sunlight daily. It can tolerate partial sun, about 3-6 hours of sunlight, but too much shade can stunt its growth and result in pale foliage. It's important to observe how sunlight moves through your garden, choosing spots that provide a balance of light and shade to ensure the plant's happiness.

How should I care for my Spider Hibiscus with artificial lighting?

If natural sunlight is insufficient, especially during winter or in less sunny spaces, artificial lighting can be a great solution for Spider Hibiscus. Opt for LED lights, as they can provide the specific wavelengths needed by plants. Full sun plants require 30-50W per square foot, partial sun plants need 20-30W per square foot, and full shade plants need 10-20W per square foot of artificial light. Ensure the light source is placed 12-36 inches above the plant to mimic natural sunlight and adjust the duration to mimic natural daylight hours, usually 8-12 hours per day.

What are the signs of inadequate lighting for Spider Hibiscus?

Inadequate lighting can lead to several issues for Spider Hibiscus, including smaller new leaves, leggy or sparse growth, faster leaf drop, slower or no new growth, lighter-colored new leaves, chlorosis (leaves turning yellow), sunscald (damaged areas on leaves or stems from intense sunlight), leaf curling (a defense mechanism against excessive sunlight), wilting (loss of turgor pressure), and leaf scorching (brown, dry, crispy leaves edges). These symptoms indicate that the plant needs more light for healthy growth.

What solutions can address the light deficiency in Spider Hibiscus?

To combat light deficiency in Spider Hibiscus, gradually move plants to a location with at least 6 hours of direct sunlight daily. If indoors and moving the plant isn't feasible, consider using artificial light such as a desk or ceiling lamp on for at least 8 hours daily or invest in professional plant grow lights. For outdoor plants, avoid sudden light intensity changes to prevent sunburn. Pruning obstructive trees can improve sunlight access. If transplanting is necessary, do so during the plant's dormant period with care. Note that parts affected by insufficient sunlight might not recover, but new growth will be healthy after improving light exposure.

🌡️ Temperature 20–37.8°C

Spider hibiscus originates from warm, tropical areas and therefore prefers temperatures between 68 and 100 °F (20 to 38 °C). Cooler conditions can impede its growth. Temperatures should be adjusted to account for seasonal changes.

Ideal temperature: 20–37.8°C
FAQ
What is the best temperature for Spider hibiscus?

To help your tropical plants thrive, it's best to maintain a temperature range of 75℉ to 90℉ (25-32℃). While different species can tolerate temperatures outside this range, sticking within a few degrees of these limits will ensure optimal growth. However, there are extreme temperature limits to be aware of. Anything below 50℉ (10℃) or above 95℉ (35℃) can hinder growth and cause issues with the leaves and stems. Low temperatures are particularly damaging, as even a light frost can lead to the death of your tropical plants. In fact, cellular death can occur rapidly, with some species dying within 12 to 24 hours.

Does Spider hibiscus need different temperatures at different stages of growth?

Spider hibiscus does not need changes in temperature to transition to different growing phases, but it is important to maintain consistency. Fluctuating temperatures can slow down its growth regardless of its current phase, so it is best to keep the plant in a controlled environment. The optimal temperature range for spider hibiscus is between 75℉ and 90℉ (25-32℃), with staying above the lower limit being especially crucial. While temperatures above 90℉ (32℃) are not ideal, the plant, being tropical, can handle them to some extent. However, temperatures below 50℉ (10℃) (and especially 40℉/5℃) can directly harm this heat-loving plant species.

Does the Spider hibiscus plant require different temperatures depending on the season?

Spider hibiscus is a plant that does not require different temperatures for different seasons. The key to taking care of it is to maintain an optimal temperature range in the environment. That is why it is recommended to keep this plant indoors, as it allows you to have control over the temperature regardless of the outside climate. When it comes to light, it is important to provide a partial side level of sun exposure for tropical species like the spider hibiscus. This means the light they receive should be dappled or filtered, with bright but indirect light being the best option when growing them indoors. Exposing the plant to too much direct sunlight can harm its leaves and hinder its growth potential.

What temperatures should you keep your Spider hibiscus within to keep it healthy?

Here are three tips to help you take care of your plants: 1. Keep your plants away from windows during colder months: Cold air can leak into your home through cracks in the windows, and any plants placed near them will be affected. Move tropical plants to an area with bright but indirect light, while avoiding potential drafts. 2. Watch out for dry patches, which may indicate too much sunlight or heat: If you notice white or scorched leaves, your plant may be getting too much heat or sunlight. This can lead to dehydration and hinder growth. Dry spots can spread and eventually cause your plants to die if left unaddressed. 3. Be cautious of frost: Colder temperatures and frost can damage plants by disrupting their water circulation. This can lead to a lack of moisture in the stems and leaves. Look out for signs of hydrosis (a water-soaked appearance) and if the issue persists, the plant may shrivel and turn dark brown or black, eventually leading to death.

How can I keep my Spider hibiscus at the right temperature?

To maintain the right temperature range for Spider hibiscus, it is important to pay attention to both the climate and humidity. Ideally, you should keep each species in a room where you can control the temperature, ensuring it stays within the range that mimics its natural habitat. It is also crucial to monitor the humidity levels, as they directly impact the temperature. You can raise the humidity artificially by using a humidifier or lightly misting the leaves with water. If you plan to grow this species outside, it may be challenging to maintain the proper balance of temperature and humidity. In such cases, if the temperatures drop or the air becomes too dry, it is best to move your plant indoors to a room where you can better control the climate. This will help your plant thrive and reach its full potential.

💨 Humidity
Humidity:
🪴 Soil 6-7
Soil pH: 6-7
🌱 Fertilizer

Correct fertilization is vital for the health and appearance of the Spider hibiscus. Fertilize the Spider hibiscus in summer, repeating the application monthly throughout the season. Nutrients fuel growth and preserve the plant’s parts. Fertilization improves the Spider hibiscus’s flower display, ensuring the best blooms.

FAQ
Why should I put plant food on my Spider hibiscus?

Fertilizer and soil nutrients are like fuel for your Spider hibiscus. They help it grow and stay healthy. Plants use nutrients from the soil to make new plant material and keep their existing parts in good shape. For the Spider hibiscus, fertilization is particularly important if you want to see the best flowers. Since the flowers are what make this plant attractive, most gardeners will want to make sure they are as beautiful as possible. Fertilization is one of the most effective ways to help your Spider hibiscus produce its best blooms.

When should I add fertilizer to my Spider hibiscus plant?

The Spider hibiscus goes through two main phases each year. The dormant phase occurs during the winter, during which minimal new growth occurs. The other phase is the active growth phase, which happens in spring and fall. This is when your Spider hibiscus requires the most fertilization. It is recommended to start fertilizing your Spider hibiscus in the spring and continue doing so about once per month throughout the rest of the spring and most of the summer. As fall approaches, you can decrease the rate of fertilization.

When is it not a good idea to put fertilizer on my Spider hibiscus?

To support Spider hibiscus growth without causing root burn, it's important to adjust your fertilizing schedule. Spring and summer are the active growth periods when extra nutrients are needed. However, in the fall and winter when the plant enters its dormancy stage, it's best to stop fertilizing.

What kind of fertilizer should I use for my Spider hibiscus?

When choosing a fertilizer for your Spider hibiscus, look for one that has a balanced mix of plant nutrients, with a slightly higher amount of phosphorus. Another option is to enhance the soil by adding organic materials like compost, worm castings, or manure. There are various forms of fertilizers available, and most of them will work well for your Spider hibiscus. However, the best choices are typically in liquid or powdered form. No matter which type you choose, make sure to dilute your fertilizer and apply it while watering your Spider hibiscus.

How can I add fertilizer to my Spider hibiscus plant?

To apply fertilizer to your Spider hibiscus, first find a suitable fertilizer and learn the ideal fertilization schedule. The most reliable method is to mix liquid fertilizer with water before applying it to the soil. Different fertilizers have different instructions, so it's best to follow the manufacturer's guidance on how to use their specific product. These instructions should also include how to properly dilute the fertilizer to avoid overfertilization. Once you have mixed the fertilizer with water, simply pour the mixture into the soil where your Spider hibiscus is planted.

🪴 Pot & Repot 2-3 years

Repot mature spider hibiscus every 2-3 years in early spring. Use a pot that is 2 inches (5 cm) larger in diameter than the previous one. After repotting, make sure the plant receives bright, indirect light and keep the soil consistently moist to aid in its recovery and growth.

Suggested frequency: 2-3 years
✂️ Pruning

To help your Spider Hibiscus thrive, prune it regularly from late winter to early spring. Remove any dead wood and thin out crowded branches to enhance air circulation. This practice not only boosts flowering but also promotes better plant health, ensuring a vibrant display during the blooming season.

🌿 Propagating
🐛 Diseases & pets
☠️ Toxicity

Characteristics

Plant Type
Herb, Shrub
Life Cycle
Perennial
Genus
Hibiscus
Family
Malvaceae
Hardiness Zone
10-11
Mature Height
3.05 m
Mature Spread
1.52 m to 1.83 m
Leaf Color
Green
Leaf Type
Evergreen
Flower Color
Red, Pink
Flower Size
1.52 cm to 3.56 cm
Bloom Time
All year round
Planting Time
Spring
Harvest Time
All year round
Native Area
Kenya, Tanzania

Tags (5)

Common Names (8)

en Campanilla
en Chinese lantern
en Fringed Rosemallow
en Japanese hibiscus
en Coral hibiscus
en Fringed hibiscus
en Japanese lantern
en Parasol hibiscus