Solanum quitoense
Quito-orange · Lulo · Naranjilla · Narangillo
Description
Source: leafsnapSolanum quitoense, known as naranjilla (Spanish pronunciation: [naɾaŋˈxiʝa], "little orange") in Ecuador, Costa Rica, and Panama and as lulo ([ˈlulo], from Quechua) in Colombia, is a tropical perennial plant from northwestern South America. The specific name for this species of nightshade means "from Quito."The lulo plant has large elongated heart- or oval-shaped leaves up to 45 cm in length. The leaves and stems of the plant are covered in short purple hairs. Naranjilla are delicate plants and must be protected from strong winds and direct sunlight. They grow best in partial shade. The fruit has a citrus flavour, sometimes described as a combination of rhubarb and lime. The juice of the naranjilla is green and is often used as a juice or for a drink called lulada.
Care Guide
💧 Water
The Quito orange comes from the subtropical highlands and prefers moist, well-drained soil. While it can tolerate moderate drought, it thrives best with consistent watering, ideally every 2-3 weeks. When grown outdoors in full sunlight, the Quito orange needs sufficient water during its flowering period to produce vibrant blooms.
How should I water my Quito orange tree?
Your Quito orange is not very picky about how you water it. You can use any common watering tool, like watering cans, hoses, or cups. It's important to water the plant by applying water directly to the soil, making sure to evenly moisten all areas. Filtered water is better than tap water because tap water may contain harmful particles. Using water that is at or slightly above room temperature is ideal, as extremely cold or hot water can shock the Quito orange. However, the Quito orange usually responds well to any type of water.
What do I do if I give my Quito orange tree too much or too little water?
For outdoor plants, particularly newly planted ones or seedlings, they are prone to not receiving enough water. It's important to remember to consistently water them enough during the first few months while the tree is still small or recently planted. Once the roots are established, Quito oranges can usually rely on rainwater most of the time. When growing Quito orange trees in pots, overwatering is more likely. If you accidentally overwater your Quito orange, you should take immediate action to address the issue. Firstly, stop watering the plant right away to minimize the negative effects of overwatering. Then, remove the Quito orange from its pot to examine its roots. If there are no signs of root rot, you can return the plant to its container. However, if you do find signs of root rot, trim away the affected roots and consider applying a fungicide to prevent further damage. Finally, repot the Quito orange in well-draining soil. In the case of underwatering, simply water the plant more frequently. Underwatering can often be easily corrected. When a Quito orange is underwatered, its leaves may droop, dry out, and fall off, but they will bounce back quickly after receiving sufficient water. Adjust your watering schedule as soon as you notice underwatering occurring.
How often should I water my Quito orange tree?
To properly care for most outdoor plants, it is essential to provide them with adequate water. If your area doesn't receive enough rainfall, you will need to manually water your plants. During the spring and fall, watering every two weeks should be sufficient. However, in the summer when plants require more hydration, you will need to water them more frequently. In the winter, when plant growth slows down and their water needs decrease, it's best to water sparingly or not at all. Young or newly planted Quito orange plants will require more frequent watering to help them establish and mature. When it comes to potted Quito orange plants, there are two main approaches to determining watering frequency. The first option is to follow a set watering schedule, with watering occurring once a week or every other week. However, this method may not take into account the specific growing conditions of your Quito orange. Additionally, the predetermined schedule may not be adequate during the summer when water needs are higher. Alternatively, you can base your watering frequency on the moisture level of the soil. It's usually best to wait until the top two to four inches of soil (about ⅓ to ½ of the pot's depth) have dried out completely before watering again. This method ensures that you are providing water when the plant truly needs it.
How much water does my Quito orange tree need?
When watering your Quito orange, it's important to note that it doesn't always require a large amount of water. If only a few inches of soil have dried since the last watering, giving it about five to ten ounces of water each time will promote healthy growth. You can also gauge the water volume based on the moisture level of the soil. Take note of how many inches of soil have dried out between waterings. To ensure your Quito orange gets enough moisture, water all the soil layers that have become dry since the last watering. If more than half of the soil is dry, it's advisable to provide more water than usual. In such cases, continue watering until you see excess water draining from the pot's drainage holes. If your Quito orange is planted in an area that receives ample rainfall, additional watering may not be necessary. When the Quito orange is young or still establishing, it should receive 1-2 inches of rain per week. As it matures, it can survive solely on rainwater. Only in situations where the weather is hot and there has been no rainfall for 2-3 weeks should you consider giving it a thorough watering to prevent stress.
How do I know if I'm giving enough water to my Quito orange plant?
Overwatering is a common issue for the Quito orange, and there are clear signs to watch out for. If your Quito orange is overwatered, its leaves will turn yellow and it may shed some leaves. Additionally, overwatering can cause the plant to shrink and encourage root rot. On the other hand, an underwatered Quito orange will also start to droop and may develop brown, fragile leaves. Whether you see signs of overwatering or underwatering, it is important to take action and revive the health of your Quito orange.
☀️ Light Full sun
Quito orange does best with ample sun exposure for vigorous growth. However, it can tolerate lower levels of sunlight without significant harm. This is connected to its native habitat, where sunlight is abundant. Still, too much or too little sun can adversely affect its growth, causing its lush leaves to wilt or become discolored.
What are the sunlight requirements for Quito orange plants?
Quito orange plants thrive best in full sun, which means they need more than 6 hours of sunlight daily to ensure vigorous growth. However, they can also survive in partial sun, with about 3-6 hours of sunlight. It's essential to watch how sunlight moves through your garden to choose spots that offer a perfect balance of light and shade for your plants. This attention to detail ensures the optimal well-being of your Quito orange plants, reflecting their native habitat conditions where sunlight is abundant.
How does sunlight affect the growth of a Quito orange plant?
Quito orange plants require abundant sun exposure for robust growth, a trait inherited from their native habitat. While they can tolerate lower sunlight levels, insufficient or excessive sun exposure could lead to adverse effects. Leaves may wilt or discolor in such unsuitable conditions. Moreover, indoor plants may need artificial lighting to achieve optimal growth, especially in spaces less exposed to natural sunlight or during winter. Artificial lighting should provide 30-50W/sq ft for full sun plants, 20-30W/sq ft for partial sun plants, and 10-20W/sq ft for full shade plants to mimic natural sunlight conditions adequately.
What are the symptoms of incorrect sunlight exposure for Quito orange plants?
Quito orange plants may exhibit various symptoms if they receive incorrect sunlight exposure. Some of these include smaller new leaves, leggy or sparse growth, faster leaf drop, slower or no new growth, and discoloration such as lighter-colored new leaves or chlorosis. They might also experience sunscald, leaf curling, wilting, and leaf scorching from too much sun. These symptoms indicate either insufficient or excessive sunlight exposure, affecting the plant's overall health and its ability to perform photosynthesis effectively.
What solutions exist for Quito orange plants receiving inappropriate sunlight?
To address inappropriate sunlight for Quito orange plants, gradual relocation to sunnier spots can ensure at least 6 hours of direct sunlight daily, which is crucial for indoor and outdoor plants. For indoor plants large or difficult to move, supplementing with artificial light for at least 8 hours daily, such as professional plant grow lights, can suffice. Outdoor plants should be moved cautiously to prevent sunburn. If sunlight is blocked by physical obstructions like trees, consider pruning or, for smaller plants, transplanting them during their dormant period to a location with better sunlight exposure and drainage. It's important to manage the transition to avoid shock, catering to each plant’s specific sunlight requirements for healthy new growth, despite some parts of the plant not recovering.
🌡️ Temperature 20–37.8°C
Quito orange is native to regions with temperatures between 68 and 100 °F (20 to 38 °C). Preferably, quito orange does best in warmer climates and should be kept within that temperature range for ideal growth. Seasonal weather may require adjustments.
What temperature range is ideal for Quito orange growth?
The Quito orange, or Solanum quitoense, thrives in temperatures ranging from 68 to 100 °F (20 to 38 °C), making warmer climates ideal for its growth. It is important to maintain temperatures above 20°C, especially during winter, to support plant growth effectively. Temperatures must be kept above the freezing point to avoid damage. When temperatures near -5°C (25°F), it's advisable to move the Quito orange indoors or to provide protection with a temporary greenhouse or wrapping materials like plastic film or fabric.
How does Quito orange respond to low temperatures, and what are the solutions?
Quito orange has a moderate tolerance to low temperatures and performs best within the 20°C to 38°C range. During winter, keeping the temperature above 5°C is crucial. Exposure to temperatures below 1°C may cause the leaves to darken and display signs such as water-soaked necrosis, wilting, and drooping, with a gradual transition to brown. To combat this, frost-damaged parts should be trimmed away, and the plant should be moved to a warmer indoor area or protected with a makeshift greenhouse. If moved indoors, placing the plant near a south-facing window ensures ample sunlight, supplemented by artificial lighting if necessary.
How does Quito orange handle high temperatures, and what are the recommended actions?
In the summer, Quito orange should not be subjected to temperatures above 38°C. Should the temperatures exceed 43°C, the plant's growth may slow, the leaf color may lighten, and the risk of sunburn increases. The recommended actions include trimming away the sunburned and dried parts of the plant, relocating it to a shaded area (especially from the harsh afternoon sun), and ensuring that the plant is watered in the morning and evening to maintain soil moisture.
💨 Humidity
🪴 Soil 5-6
🌱 Fertilizer
Use organic fertilizers (for example, fish emulsion or compost) instead of chemical fertilizers for Quito orange. Supply young plants with higher nitrogen and phosphorus in spring. Mix compost or fertilizer into the soil before or after planting. For mature plants, add a balanced fertilizer or one targeted to specific deficiencies in spring. Nutrient deficiency produces small leaves, short (stunted) branches, yellow to bronze foliage, acidic (sour) fruit, premature fruit drop, and fruit splitting.
Why should I put fertilizer on my Quito orange?
To ensure the best harvest of Quito oranges, it's important to provide the necessary nutrients for the plant. These nutrients, known as macronutrients, play different roles in plant growth. Phosphorus, for example, is essential for the formation of flowers and fruit. However, it's also important to support the root system and leaves so that they can absorb sunlight effectively. Without enough macronutrients, plants become weak, grow slower, and may even wilt. Since flowering and fruiting require a significant amount of energy, it's crucial to provide the necessary components for these processes. Otherwise, the resulting fruits will reflect the nutrient deficiency.
When should I fertilize my Quito orange tree for the best results?
When planting Quito orange, it's important to do so in the spring in order to have fruits during the summer. Confirm the specific variety for the appropriate planting time. To ensure high-quality produce, it requires rich and fertile soil. Prior to planting, mix compost or well-rotted manure into the soil, about 2 inches deep. This will provide essential nutrients and enhance soil drainage. Transplants can be fertilized right after planting, while seedlings should grow to a height of 2 to 4 inches before the first fertilization. For established plants, feed them every 3 to 4 weeks until the first frost or cessation of production. Consider the specific fertilizer type and variety of Quito orange to tailor your fertilization schedule. If in doubt, it's better to use less fertilizer.
When is the best time to not use fertilizer on my Quito orange plant?
To ensure healthy growth and fruit production for your Quito orange, it is important to use a fertilizer with balanced nutrient levels. Avoid using excessive nitrogen as it can result in more foliage but fewer blooms and fruits. Look for a fertilizer with a lower nitrogen content compared to other nutrients. Additionally, it is advisable not to fertilize your Quito orange in high temperatures or dry conditions. This is because the fertilizer may wash away without being absorbed by the soil, and plants are less capable of absorbing nutrients during hot weather. Retained fertilizer in the soil can hinder water uptake by the plants, which can be detrimental during a drought or heatwave.
What kind of fertilizer does my Quito orange tree need?
To determine the right fertilizer for your Quito orange, start by analyzing your soil to identify any deficiencies or excesses. While a soil test is ideal for this, some people have success growing Quito oranges without one through trial and error. Instead of buying a different fertilizer for each vegetable, you can use the same one if you understand their basic needs and what is already present in your soil. Many growers prefer high-phosphorus fertilizers to support flower and fruit production, which have an NPK ratio with the middle number being the highest (e.g., 8-32-16 or 10-30-10). On the other hand, some opt for a balanced fertilizer like 10-10-10 to simplify their garden maintenance.
How should I add fertilizer to my Quito orange tree?
There are different types of fertilizer, and each type has its own instructions. Some may need to be diluted, while others require careful measurement. It's important to follow these instructions and do your research to avoid over-fertilizing your garden. If you have a Quito orange tree planted in a row, you can use the side-dressing method to ensure that the fertilizer reaches the roots without touching the plant itself. To do this, mix the fertilizer into the soil along the rows on either side, about 3 to 4 inches away from the base of the plant. When you water the plants, the nutrients will be washed into the soil and down to the roots. If the side-dressing method doesn't work for your garden's configuration, you can apply the fertilizer to the soil around the plant, again staying about 3 to 4 inches away. For granular fertilizers, you can scatter them onto the soil and lightly mix them in to ensure they are incorporated where you want them. After applying dry fertilizers, make sure to water thoroughly. Liquid fertilizers are mixed into a watering can and used to water and fertilize the plants at the same time. Another option is foliar feeding, which involves spraying the leaves with a specialized fertilizer mix instead of putting nutrients into the soil.
🪴 Pot & Repot Every 12 months
✂️ Pruning
For optimal growth, prune your Quito orange trees in early spring. This involves removing dead branches to improve air circulation, shaping the plant, and encouraging the emergence of strong new stems. Ensure that all cuts are clean and use sterilized tools to prevent disease. Regular annual pruning is essential for maintaining the tree’s health and increasing fruit production.
🌿 Propagating
🐛 Diseases & pets
☠️ Toxicity
Characteristics
- Plant Type
- Shrub
- Life Cycle
- Perennial
- Genus
- Solanum
- Family
- Solanaceae
- Hardiness Zone
- 10-12
- Mature Height
- 1.83 m
- Mature Spread
- 1.83 m
- Leaf Color
- Green, Gray
- Leaf Type
- Evergreen
- Flower Color
- Lavender
- Flower Size
- 3.05 cm to 4.06 cm
- Bloom Time
- All year round
- Planting Time
- Spring, Summer, Autumn
- Harvest Time
- All year round
- Native Area
- Colombia, Honduras, Venezuela, Peru, Costa Rica, Panama