Streptosolen jamesonii
🍃leaf (5)
🌸flower (5)
🍎fruit (1)
🌳bark (3)
🌿habit (5)
🌱other (4)

Streptosolen jamesonii

Marmalade-bush · Orange-browallia · Firebush · Marmelade bush · Yellow heliotrope

Tier 1 Difficulty: easy Water: low Light: full_sun
Water every
14 days
Temperature
20–37 °C
Soil pH
5–6
Hardiness
Zone 10–11
Click count
134
Observations
351

Description

Source: leafsnap

Streptosolen is a monotypic genus of flowering plants in the family Solanaceae. It is closely related to the genus Browallia, within which it was originally placed. The single species, Streptosolen jamesonii, the marmalade bush or fire bush, is an evergreen shrub bearing loose clusters of flowers which change gradually from yellow to red as they develop, resulting in an overall appearance resembling orange marmalade (whence the name), found in open woodlands in Colombia, Venezuela, Ecuador, and Peru. In its native Ecuador, the plant has the Spanish common names flor de quinde (= 'hummingbird flower'), flor del sol (= 'flower of the sun') and jaboncillo (= 'little soap (plant)').[Note: the South American Spanish word quinde (hummingbird) is derived from the Quechua word quindi, having the same meaning. The word passed into Spanish because there was no pre-existing Spanish word for a family of birds found only in the New World.]The red colouration (at maturity) of the flowers of Streptosolen jamesonii is typical of that of bird-pollinated flowers, as also is their lack of a strong scent and secretion of a great deal of nectar. The iridescent green hummingbird species Chlorostilbon poortmani, the short-tailed emerald, is a frequent visitor to the flowers of Streptosolen jamesonii, pollinating them as it hovers to sip their nectar.Hunziker (2001) gives the further common names for the plant in Ecuador nacha, agua de oro (= 'water of gold'), and guizcho de bosque.Two other English vernacular names sometimes applied to the shrub are Orange Browallia and Yellow Heliotrope shrubThe plant has become naturalized in certain localities in Hawaii.

Care Guide

💧 Water Every 2 weeks

The marmalade bush thrives best when it receives consistent moisture. To maintain optimal soil hydration, it should be watered every two weeks. This plant flourishes outdoors in full sun and especially benefits from even soil moisture during its active growing season.

Suggested frequency: Every 2 weeks
FAQ
How should I water my Marmalade bush?

Your Marmalade bush is not picky about how you water it. You can use any common watering tool like watering cans, hoses, or cups. Regardless of the tool, water the soil directly and make sure to moisten all areas equally for the root system. It is helpful to use filtered water to avoid harmful particles and water that is at or slightly above room temperature to avoid shocking the bush. However, the Marmalade bush generally responds well to any kind of water.

What should I do if I give my Marmalade bush too much water or not enough?

Outdoor plants, including newly planted ones and seedlings, can be vulnerable to inadequate watering. It is important to consistently water them for the first few months, especially when they are small or recently planted. Once the roots are established, Marmalade bushes can rely on rainwater most of the time. If you have Marmalade bushes in pots, overwatering is a common issue. If you accidentally overwater your plant, act quickly to address the situation. Immediately stop watering the plant to minimize the impact of overwatering. Then, remove the Marmalade bush from its pot to inspect its roots. If no signs of root rot are found, you can return the plant to its container. However, if there are signs of root rot, trim the affected roots and consider applying a fungicide to prevent further damage. Finally, repot the Marmalade bush in well-draining soil. On the other hand, if your Marmalade bush is underwatered, simply increase the frequency of watering. Underwatering is usually an easy problem to fix. When a plant is underwatered, its leaves may droop, dry out, and fall off. However, they will regain fullness after sufficient watering. Make sure to adjust your watering schedule as soon as you notice signs of underwatering.

How frequently do I need to water my Marmalade bush?

Most outdoor plants can grow naturally with rainfall, but if your area doesn't get much rain, water them every 2 weeks in spring and fall, more often in summer, and less in winter. You may not need to water at all in winter. Young or newly planted Marmalade bushes need more frequent watering to help them establish and grow. For potted plants, you can either have a set watering schedule of once a week or every other week, or you can check the soil moisture and water when the top 2 to 4 inches of soil have dried out.

How much water does my Marmalade bush require?

When watering your Marmalade bush, you don't always need to use a lot of water. If only a few inches of soil have dried out since your last watering, giving the bush about five to ten ounces of water is sufficient for healthy growth. You can determine the appropriate water volume by checking the soil moisture. Take note of how many inches of soil have dried out between waterings. To ensure the bush gets enough moisture, water it enough to moisten all the dried out soil layers since the last watering. If more than half of the soil is dry, you may need to give more water than usual. In such cases, continue watering until you see excess water draining from the pot's holes. If the Marmalade bush is in an area that receives ample rain, additional watering may not be necessary. When the bush is young or in the process of establishing itself, it should receive 1-2 inches of rain per week. As it grows and becomes established, it can rely solely on rainwater, unless there is a period of hot weather without rainfall for 2-3 weeks, in which case a full watering is needed to prevent stress.

How do I know if I'm giving enough water to my Marmalade bush?

The Marmalade bush is more often overwatered, and there are a few signs to watch for. Generally, an overwatered bush will have yellowing leaves and might drop some leaves. Overwatering can also make the plant structure shrivel and lead to root rot. On the other hand, an underwatered bush will also start to wilt and may have brown or brittle leaves. Whether you see signs of overwatering or underwatering, take action to bring your Marmalade bush back to health.

☀️ Light Full sun

Marmalade bush needs plentiful sunlight for best growth. Although it can survive with moderate sun, the greatest amount of light encourages stronger development. Having evolved in habitats with ample sun, it may show stress under low light, such as slower growth or paler leaves. Conversely, too much sun can cause leaf scorching.

Ideal: Full sun
FAQ
What are the sunlight requirements for a Marmalade Bush?

The Marmalade Bush (Streptosolen jamesonii) requires abundant sunlight for optimal growth, preferring locations that provide full sun, which means above 6 hours of sunlight daily. It can also grow in partial sun, receiving about 3-6 hours of sunlight. However, it's crucial to observe the movement of sunlight through your garden to pick spots offering the right mix of light and shade, ensuring the plants' well-being and preventing issues related to both under and overexposure to sunlight.

How does insufficient sunlight affect the Marmalade Bush, and what are the common symptoms?

When the Marmalade Bush does not receive enough sunlight, especially indoors during winter, it exhibits several symptoms indicating light deficiency. These include smaller new leaves, leggy or sparse growth, faster leaf drop, slower or no new growth, lighter-colored new leaves, chlorosis (yellowing leaves due to a breakdown of chlorophyll), sunscald (damaged leaves or stems from intense sunlight), leaf curling, wilting, and leaf scorching. These symptoms are crucial indicators that the plant is struggling with the lighting conditions it is placed in.

What artificial lighting requirements do indoor Marmalade Bush plants have?

Indoor Marmalade Bush plants require adequate lighting to thrive, especially when natural sunlight is insufficient, such as in winter or less sunny spaces. Artificial lights, like LED lights which can be customized to provide specific wavelengths, are vital for promoting healthy growth. Full sun plants should receive 30-50W/sq ft, partial sun plants 20-30W/sq ft, and full shade plants 10-20W/sq ft of artificial light. The light source should be placed 12-36 inches above the plant, mimicking natural sunlight as closely as possible, and should be left on for 8-12 hours per day to ensure optimal growth.

How can you address and mitigate the symptoms of insufficient sunlight for Marmalade Bush?

To address insufficient sunlight for a Marmalade Bush, you can gradually move the plants to a location with more sunlight, ensuring they receive at least 6 hours of direct sunlight daily. If moving the plant isn't feasible, consider supplementing with artificial light, keeping a lamp on for at least 8 hours daily. Outdoors, slowly acclimate your plants to sunnier spots to avoid sunburn. Additionally, for ground-planted bushes, reduce obstructions like overhead branches that may block sunlight and consider transplanting to a sunnier location during the plant's dormant period. Remember, while affected parts of the plant might not recover, new growth should be healthy following these adjustments.

🌡️ Temperature 20–37.8°C

Marmalade bush is native to regions whose temperatures fall within its preferred range of 68 to 100 °F (20 to 38 ℃). To thrive, recreate that temperature regime. You may need to adjust temperatures to accommodate seasonal variations.

Ideal temperature: 20–37.8°C
FAQ
What is the ideal temperature range for a Marmalade Bush?

The Marmalade Bush (Streptosolen jamesonii) thrives in temperatures between 68 to 100°F (20 to 38°C). To ensure the plant flourishes, it's essential to replicate this temperature environment closely. Because the Marmalade Bush loves heat, cold temperatures can be harmful. It is recommended to move the plant indoors during autumn to a location near a bright window, while also keeping it away from heaters to avoid damage. During winter, maintaining temperatures above 20°C is beneficial for the bush, as any temperatures nearing 5°C can be detrimental.

How do you care for a Marmalade Bush in low temperatures?

The Marmalade Bush prefers warm temperatures and does not tolerate low temperatures well. It's best kept in conditions above 20°C, especially during winter where it should remain above 5°C to avoid damage. Exposure to temperatures below 1°C can cause the leaves to lighten in color. Following frost damage, leaves may turn brown or black, and the plant may exhibit wilting or drooping. To care for a frost-damaged plant, trim off the damaged parts and move the plant to a warm, indoor spot. Placing it near a south-facing window can ensure it gets enough sunlight without the harm of heaters or air conditioning vents causing dryness.

What should you do if a Marmalade Bush is exposed to high temperatures?

During the summer, it's crucial to keep the Marmalade Bush's temperature below 38°C. Temperatures exceeding 43°C can lighten the color of the leaves and increase the risk of sunburn. If the plant suffers from high temperature damage, trim away the sunburned and dried parts. Then, move the plant to a shadier location to protect it from midday and afternoon sun. To assist the plant in coping with heat, watering it in the morning and evening will help maintain soil moisture, crucial for its well-being under high temperatures.

💨 Humidity normal (40-60%)

This plant will thrive in moderate humidity, which is probably the level in your home. However, misting it a few times a week can be very beneficial. Make sure the room has good ventilation.

Humidity: normal (40-60%)
🪴 Soil 5-6
Soil pH: 5-6
🌱 Fertilizer

The best time to fertilize a Marmalade bush is in early spring, as it breaks dormancy. This supports overall growth and the development of flowers. Fertilizing improves the foliage, stems, and branches, and encourages flowers that are large, vibrant, and long-lasting. It also helps move nutrients from the roots to the flowers and enhances the plant’s health and resistance to disease.

FAQ
Why should I put fertilizer on my Marmalade bush?

Fertilization plays a vital role in overall health and well-being of a Marmalade bush. It ensures the plant receives sufficient energy and nutrients, resulting in healthy foliage, sturdy stems, and branches. Notably, the flowers of the Marmalade bush hold great value to gardeners, and fertilization is beneficial in producing large, vibrant, and long-lasting blooms. The right type of fertilizer facilitates efficient fuel transfer from roots to flowers, while also improving the plant's overall health, enabling it to combat diseases effectively.

When should I put fertilizer on my Marmalade bush?

The best time to fertilize a Marmalade bush is in early spring, as it comes out of dormancy and prepares to bloom. This will provide the necessary energy for growth and flowering. However, it's not the only time to fertilize. Another feeding in the fall can also benefit the plant, but it doesn't need to be as large as the first one. Some people fertilize when planting, but it's not always necessary.

When is it best to not fertilize my Marmalade bush?

During winter, Marmalade bushes do not require fertilizer because they are in a dormant phase and do not need much energy from the soil to grow. Fertilizing in winter can lead to overfertilization. The best times to feed a Marmalade bush are in early spring and fall. Therefore, for most of the spring and summer, fertilizer is not necessary. Additionally, it is advisable to skip feedings if the plant is facing hot or dry conditions.

What kind of fertilizer does my Marmalade bush need?

When fertilizing Marmalade bush plants, it is usually fine to use a general-purpose fertilizer with equal amounts of nitrogen, phosphorus, and potassium. However, for the best results, it is recommended to use a specific type of fertilizer. The most important nutrients for Marmalade bush plants are nitrogen and phosphorus, so these should be present in higher amounts compared to potassium in the fertilizer. A fertilizer with an N-P-K ratio of 10-10-8 or something similar would be suitable. Additionally, using organic materials such as compost for one of your yearly feedings can also be beneficial. If you decide to use fertilizer, granular fertilizer is the most commonly used for Marmalade bush plants.

How should I give nutrients to my Marmalade plant?

Feeding your Marmalade bush with fertilizer is a simple task that even beginner gardeners can do. To use granular fertilizer, just sprinkle it on the soil after moistening it with water. You can also improve the soil for your Marmalade bush by adding organic materials like compost or manure. To do this, place some of the material on top of the soil and gently work it into the top few inches with a hand rake, being careful not to disturb the roots.

🪴 Pot & Repot 2-3 years

Spring is the ideal time to repot a marmalade bush, which can grow as tall as 5 feet. It's recommended to repot the plant every 2-3 years, using a larger pot that offers good drainage. Keep the soil moist but avoid overwatering, and ensure the plant receives bright, indirect light for the best recovery and growth.

Suggested frequency: 2-3 years
✂️ Pruning

The marmalade bush showcases vibrant orange flowers and lush foliage. To encourage fuller growth and abundant blooms, prune the bush in late spring after it has finished blooming. Be careful not to over-prune, and always use clean, sharp tools for precise cuts to preserve the plant's health and appearance.

🌿 Propagating
🐛 Diseases & pets
☠️ Toxicity

Characteristics

Plant Type
Shrub
Life Cycle
Perennial
Genus
Streptosolen
Family
Solanaceae
Hardiness Zone
10-11
Mature Height
3.05 m
Mature Spread
2.44 m
Leaf Color
Green
Leaf Type
Evergreen
Flower Color
Gold
Flower Size
2.54 cm to 5.08 cm
Bloom Time
All year round
Planting Time
Spring, Summer, Autumn
Harvest Time
All year round
Native Area
Colombia, Venezuela, Peru, Ecuador, Costa Rica

Tags (6)

Common Names (5)

en Marmalade-bush
en Orange-browallia
en Firebush
en Marmelade bush
en Yellow heliotrope