Solandra grandiflora — an easy houseplant, prefers full sun light
SPECIMEN · FROM THE LIBRARY
Solandra grandiflora

Solandra Grandiflora

Updated · 184 observations
ON THIS PLANT

Solandra grandiflora, the showy chalicevine, or papaturra is a member of the nightshade ( Solanaceae ) genus Solandra and, like the other members of the genus, is a climbing plant with large, attractive, trumpet-shaped flowers. It is native to Central America and northern South America and is widely grown in the tropics as an ornamental. The green parts of the plant are highly toxic (hallucinogenic / delirient in small doses), due to tropane alkaloid content, and have caused deaths from anticholinergic poisoning, but the flesh of the ripe fruit ( although not the unripe fruit or seeds ) is said to be edible. The fruits, which are globular and largely enclosed by the accrescent calyces, can reach a kilogram in weight and have a taste described as apple-like or melon-like.

A note from PlantMom

Showy chalice vine is resistant to disease and is generally not prone to illnesses. Regarding care, this plant is fairly low-maintenance. Planted outdoors, it needs minimal watering, and larger plants usually do not require pruning. Smaller plants should be pruned after they have finished blooming. Showy chalice vine is appropriate for anyone with outdoor space, like a garden or deck, and does not demand extensive plant-care experience.

— PlantMom
CARE GUIDE

How to keep Solandra Grandiflora.

Light

Showy chalice vine is native to open habitats, such as sunny meadows and forest edges, which provide abundant light. It prospers in full sun but can also tolerate partial sun, adapting well to various sunlight conditions.

Water

The Showy Chalice Vine thrives in tropical climates with heavy rainfall and high humidity. It prefers moist conditions but can withstand short dry periods. To support its growth, water the plant every three weeks. Typically grown outdoors, the Showy Chalice Vine flourishes when the soil remains consistently moist during its active growing season.

Temperature

The showy chalice vine originates in tropical regions, where the climate is typically warm and humid. As a result, it is well adapted to high temperatures and humidity. It does not tolerate sudden temperature changes and prefers a stable temperature environment, so it is important to avoid temperature fluctuations indoors. It generally cannot withstand cold temperatures and requires higher temperatures to grow. If the ambient temperature falls too low, the plant may stop growing or even die.

Fertilizer

The best time to fertilize a Showy chalice vine is in early spring as it comes out of dormancy. This supports overall growth and flower development. Fertilizing improves foliage, stems, and branches while encouraging large, vibrant, long-lasting blooms. It also helps transport nutrients from the roots to the flowers and boosts the plant's health and resistance to disease.

Pruning

The showy chalice vine benefits greatly from early spring pruning. By removing dead or overgrown branches, you encourage healthy growth and improve the plant's shape. It's important to focus on pruning the inner branches to enhance airflow and decrease the risk of disease. This regular maintenance not only supports vigorous blooming but also preserves the vine's visual appeal throughout the seasons.

CHARACTERISTICS

Botanical profile.

Plant Type
Vine
Life Cycle
Perennial
Genus
Solandra
Family
Solanaceae
Hardiness Zone
10-12
Mature Height
3.05 m to 6.1 m
Mature Spread
2.13 m to 3.96 m
Leaf Color
Green
Leaf Type
Evergreen
Flower Color
White, Yellow, Purple, Gold
Flower Size
15.24 cm to 20.32 cm
Bloom Time
Mid winter, Late winter, Early spring, Mid spring
Planting Time
Spring, Autumn
Harvest Time
Mid spring, Late spring, Early summer
Native Area
Colombia, Cuba, Honduras, Mexico, Guatemala, Venezuela, Peru, Costa Rica, Panama, Jamaica
ALSO KNOWN AS

Other names.

en Showy Chalicevine en Big chalice-vine en Silver-cup en Showy Chalice-vine en Chalice vine en Juniper
FREQUENTLY ASKED

Reader questions.

How should I water my Showy chalice vine in the best way possible?

To promote excellent root development, place a garden hose at the base of the plant. Avoid spraying the leaves directly and keep in mind that leaves outdoors in direct sunlight will need more water. Use bubblers to moisten the roots of each plant, or soaker hoses to water the entire garden or bed. After adding or removing plants, make sure to drain any excess water and wait for the soil to dry before watering again. To prevent diseases, water at ground level. On sunny days, it is recommended to spray the entire bush with water. Regardless of whether the plant is potted or in-ground, remember that the Showy chalice vine prefers deep watering rather than light sprinkling.

What are the sunlight requirements for Showy Chalice Vine?

Showy chalice vine requires above 6 hours of sunlight daily to thrive, preferring full sun conditions. However, it's important to observe the movement of sunlight through your garden and choose locations that offer a mix of light and shade, ensuring the plants receive the right balance for growth. This vine originates from open environments like sunny meadows and forest edges, indicating its adaptability to both full and partial sun conditions.

What should I do if I give too much or too little water to Showy chalice vine?

An overwatered Showy chalice vine will show signs such as yellowing and wilting leaves, as well as a dull and unhealthy appearance with mushy stems. Adjust your watering schedule as needed when these signs appear. Wilting can also be a sign of under watering, in which case the leaves will turn crispy and dry. Check the soil for dryness and give the plant a full watering when needed. While enough water will help the Showy chalice vine recover, the damaged root system may cause the plant to have dry, yellow leaves for a few days. Once the plant returns to normal, the yellowing will stop. Indoors, always check the moisture levels of the pot and avoid overwatering. Look for signs of black spots, and if present, allow the soil to dry in the pot by withholding watering for a few days. Overwatering can lead to root rot, so if you see discolored and slimy roots, consider transferring the plant to a different pot. Prevent root rot by avoiding soggy soil. When planting the Showy chalice vine outdoors, make sure to dig deeper and check the soil moisture with your fingers. If the soil is too dry, it may be a sign of underwatering, so provide adequate watering to help the plant recover.

How can artificial lighting assist in the growth of indoor Showy Chalice Vine plants?

Artificial lighting is crucial for indoor Showy Chalice Vine plants, especially in conditions where natural sunlight is inadequate, such as during winter or in less sunny spaces. It promotes faster, healthier growth by compensating for the lack of natural light. LED lights are a popular choice due to their ability to provide specific wavelengths needed by plants. For full sun plants, 30-50W per square foot is recommended; partial sun plants need 20-30W per square foot; and full shade plants require 10-20W per square foot. The light source should be placed 12-36 inches above the plant, mimicking natural sunlight for 8-12 hours per day.

How frequently should I water my Showy chalice vine?

The Showy chalice vine prefers deep watering, and it's especially important to soak them in a gallon of water when they're in pots. Potted plants have limited water storage and their soil dries out faster. In cold regions, water is needed every 3 to 5 days. It's best to water early in the morning when the soil is dry, whether the plant is indoors or outdoors. To determine if watering is necessary, check the soil. If the top 2-3 inches are dry, it's time to water. During hot days, monitor the moisture daily as the heat can quickly dry out the soil in pots. If you have a garden, irrigating the soil is important. In hot climates, watering once a week is sufficient if about 2 to 3 inches of soil become too dry. Be mindful of rainfall to avoid overwatering and root rot. Showy chalice vine generally grows during spring and fall. For outdoor plants, adding 3 to 4 inches of mulch helps conserve water. Sandy soil requires more frequent watering, while clay soil can go 2-3 days without watering to avoid root rot. To keep track, mark the watering dates on the calendar and water the plants when the leaves start to droop, indicating a potential delay.

What are the signs of light deficiency in Showy Chalice Vine?

When Showy Chalice Vine is grown in conditions with insufficient light, it may display several symptoms indicating stress. These include smaller new leaves, leggy or sparse growth, faster leaf drop, cessation of new growth, lighter-colored or irregularly patterned new leaves due to chlorophyll deficiency, chlorosis or yellowing of leaves, sunscald, curling or twisting of leaves as a defense against sunlight exposure, wilting from excessive water loss, and leaf scorching characterized by brown, dry, and crispy leaf edges.

How much water does my Showy chalice vine need?

The Showy chalice vine typically requires one gallon of water per watering schedule. For potted plants, water them deeply until you see water dripping from the bottom of the pot. Allow the soil to dry before watering again. You can use a water calculator or moisture meter to determine the amount of water given to your plant per week. Ensure adequate water during the flowering period, but allow the moisture to evaporate to prevent root rot. If the Showy chalice vine is planted outdoors with sufficient rainfall, additional watering may not be necessary. When the vine is young or newly planted, it needs 1-2 inches of rain per week. As the vine grows, it can rely solely on rainfall. Only when the weather is very hot or there has been no rainfall for 2-3 weeks should you consider giving the vine a full watering during cooler parts of the day to prevent heat damage. Additional watering is needed during extended dry spells.

What are the solutions for Showy Chalice Vine experiencing light deficiency?

To combat light deficiency in Showy Chalice Vine, both indoor and outdoor strategies can be employed. Indoors, gradually move the plant to sunnier spots each week until it receives at least 6 hours of direct sunlight daily, positioning it near a south-facing window for maximum exposure. If moving the plant is not possible, consider using artificial lights for at least 8 hours a day. Outdoors, gradually adjust the plant to sunnier locations to avoid sunburn, allowing it to adapt to the increased light. If trees or structures block sunlight, prune or remove obstructions to improve exposure. For smaller plants, consider transplanting them during their dormant period to a location with better sunlight and drainage. Note that parts of the plant damaged by light deficiency may not recover, but new growth will be healthy with proper light conditions.

Should I change how often I water my Showy chalice vine depending on the time of year or the weather?

The Showy chalice vine prefers to be outdoors and relies on rainfall for watering, except in dry weather when it might need extra watering. During the spring and fall, the soil should be kept moist but not too wet. Alternating between dry and moist soil is beneficial for the plant. In the summer, hot temperatures can speed up water evaporation and may require more frequent watering to keep the plant moist. During winter, the plant requires less water as it enters a dormant phase. You can use well-draining soil like terracotta to help the water evaporate. Once the plant becomes dormant, you can rely on fall and winter rains without needing to water it. In the spring, you can encourage growth by providing warm temperatures. It's important to ensure good drainage at all times, especially in winter. For potted plants, regular watering is important, especially in the summer. Avoid shallow sprinkles that only reach the leaves and focus on deep soakings that reach the roots. Keep the plant from drying out completely in the fall and winter, even during dormancy. Make sure the plant is not sitting in water for too long, as this can cause damage. Mulching can be helpful to reduce stress, conserve water, and promote healthy blooms.

What should I watch out for when watering my Showy chalice vine in different seasons, climates, or when it's growing?

If you are planting Showy chalice vine in the ground, it mostly relies on rain for water. However, if there is no rain for 2-3 weeks, you should consider giving the plants a deep watering. In the summer, it is best to water them in the morning to avoid stressing the roots with a large temperature difference between the water and the roots. Avoid watering the bushes when it is too hot outside. Start mulching them in the spring when the ground is not too cold. The age of the plants is important. Newly planted ones often fail to grow due to lack of water. Once they are established, you should reduce the frequency of watering. During the fall and winter, especially if the soil has water-retaining material, water them less. Dry winds in these seasons can dry out the plants, especially the newly planted ones. Windy seasons require more watering. Plants in pots dry out faster, so they need to be watered more often. If you notice less blooming and drying leaves, it may be a sign that they need more water. Watering potted plants can be more complex, and the frequency may vary. Be careful not to let the pot sit in water by avoiding saucers, bowls, and trays. Too much watering in the fall can cause mottled or yellowish foliage. Overwatering should always be prevented, regardless of the climate or season. During the flowering months, you can increase the watering frequency, but once they are fully grown, let them rest. Water them every 3 to 5 days, but don't stick to a rigid schedule. Check the soil moisture by feeling it with your finger or using a moisture meter. Overwatering or underwatering can cause root rot and ultimately lead to plant death.

Why is it necessary to water my Showy chalice vine?

To ensure the health of the Showy chalice vine, it is important to properly water it. The amount of water needed will depend on the weather and soil conditions. While this plant thrives in moist soil, it cannot tolerate excessive waterlogging. When planting it in the ground, provide enough mulch and avoid watering too little. When planted in a pot, make sure to give it a full can of water, ensuring that the water is moist at the base to promote the best blooms. If the plant is grown for foliage, water it to a depth of 10 to 20 inches for continued growth. In rainy weather, it is not necessary to water the vine as it can obtain the needed nutrients from the rainwater.

PLATES
Solandra grandiflora leaf
PLATE 01 · leaf
Solandra grandiflora leaf
PLATE 02 · leaf
Solandra grandiflora flower
PLATE 03 · flower
Solandra grandiflora flower
PLATE 04 · flower
Solandra grandiflora bark
PLATE 05 · bark
Solandra grandiflora bark
PLATE 06 · bark
ALSO IN THE LIBRARY

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