Plumeria obtusa
SPECIMEN · FROM THE LIBRARY
Plumeria obtusa

Plumeria Obtusa

Photo · (c) miguelangel0208, some rights reserved (CC BY-NC) COURTESY INATURALIST
A NOTE OF INTEREST

Plumeria obtusa, commonly known as the Singapore Plumeria or White Frangipani, is a small tree or shrub belonging to the Apocynaceae family. Native to Southeast Asia, it is commonly found in countries such as Singapore, Malaysia, Indonesia, and Thailand.

This plant has a slow growth rate and can reach a height of up to 10 meters. It features thick stems with smooth grey bark that exudes a milky sap when cut. The leaves are glossy green, oval-shaped, and have pointed tips.

One of the most distinctive features of Plumeria obtusa is its fragrant flowers, which bloom in clusters at the ends of branches from late spring through summer. The flowers are white with yellow centers and have five petals that form a star shape.

The Singapore graveyard flower is commonly planted in cemeteries because its blossoms, which fall during the night, are considered by some Muslims and Buddhists to be offerings to the deceased. In the Pacific Islands, wearing a Plumeria flower also carries cultural significance: a flower behind the right ear indicates that a woman is single, while a flower behind the left ear signifies that she is married. FUN FACT · FROM THE LIBRARY

Plumeria obtusa prefers full sun exposure but can also tolerate partial shade. It thrives in well-draining soil and requires moderate watering during its growing season, though it should be kept dry during winter dormancy.

In traditional medicine, various parts of Plumeria obtusa have been used for their medicinal properties, such as treating skin infections, reducing fever, and providing pain relief.

Overall, Plumeria obtusa is an attractive plant renowned for its fragrant flowers. It is popular among gardeners worldwide for ornamental purposes and is often used as cut flowers due to their long-lasting nature when placed in water vases, both indoors and outdoors.

THE NAME

The Singapore graveyard flower belongs to a genus named after Charles Plumier, a 17th-century monk and botanist. The species name "obtusa," meaning blunt, refers to the rounded tips of the plant's leaves. In some countries, this flower is known as frangipani, a name derived from the Marquis Frangipani who created a perfume with a fragrance similar to the flower's intoxicating scent.

A note from PlantMom

Singapore graveyard flower is resistant to disease and is generally not susceptible to illnesses. In terms of care, this plant is fairly low maintenance. When grown outdoors it needs only minimal watering, and larger plants usually do not require pruning. Smaller plants, however, should be pruned after they finish blooming. The Singapore graveyard flower is appropriate for anyone with an outdoor area, such as a garden or deck, and does not demand much care experience.

— PlantMom
CARE GUIDE

How to keep Plumeria Obtusa.

Light

The singapore graveyard flower does best when given abundant light similar to that found in its native, sunlit habitats. Too little light can result in weaker growth, sparse flowering, or leaf drop. By contrast, excessive light can scorch the foliage. Therefore, maintaining moderate light levels is important.

Water

The Singapore graveyard flower thrives in environments that are consistently moist. To ensure its healthy growth, it's important to maintain a careful balance between hydration and drainage. This plant prefers stable humidity levels. You should water it every 1-2 weeks, allowing the soil to dry slightly between waterings. Thanks to its waxy leaves, the plant retains moisture more effectively, which means you can reduce the frequency of watering during cooler months.

Temperature

The Singapore graveyard flower grows well in its native tropical habitat, needing warm temperatures between 68 and 100°F (20 to 38℃). During cooler seasons it may require extra warmth from indoor heating or grow lamps.

Fertilizer

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

Pruning

The Singapore graveyard flower is known for its striking white blossoms and glossy leaves. For optimal growth, pruning should be conducted during its dormant phase, from early to late winter. This involves removing dead branches and thinning the inner growth to improve the plant's health, vigor, and the abundance of blooms. For detailed pruning techniques, consult reputable horticultural guides.

Pot & Repot

To ensure optimal growth for the Singapore graveyard flower, a medium-sized shrub, repot it every two years during the spring. Choose a pot that is 2-3 inches larger in diameter. After repotting, place the plant in bright, indirect light and water it regularly. These steps will help the plant acclimate and maintain its health.

CHARACTERISTICS

Botanical profile.

Plant Type
Tree
Life Cycle
Perennial
Genus
Plumeria
Family
Apocynaceae
Hardiness Zone
10-12
Mature Height
3.05 m to 7.62 m
Mature Spread
3.05 m to 7.62 m
Leaf Color
Green, Brown
Leaf Type
Evergreen, Semi-evergreen
Flower Color
White, Yellow
Flower Size
4.06 cm
Bloom Time
Summer
Planting Time
Spring, Autumn
Harvest Time
Mid summer, Late summer, Early fall
Native Area
Bahamas, Belize, Cuba, Honduras, Mexico, Guatemala, Jamaica
ALSO KNOWN AS

Other names.

en Frangipani en Singapore graveyard flower en Pagoda tree en Singapore plumeria en Temple tree en West Indian jasmine en దేవ గన్నేరు en Champa en Ketki flower en Cây hoa đại en Kaattu chempakam(Malayalam)
FREQUENTLY ASKED

Reader questions.

How should I water the flowers in my Singapore graveyard?

To water your Singapore graveyard flower, you can use any common watering tool like watering cans, hoses, or even cups. It's important to water the soil directly and make sure all areas are evenly moistened to provide water to the entire root system. Using filtered water is recommended to avoid harmful particles from tap water. It's also best to use water at room temperature or slightly above, as very cold or hot water can be a bit of a shock to the plant. However, the Singapore graveyard flower generally does well with any type of water.

Why should I put fertilizer on my Singapore graveyard flower?

Fertilization plays a crucial role in maintaining the health and well-being of a Singapore graveyard flower. It ensures that the plant receives the necessary energy and nutrients for healthy foliage growth and the development of strong stems and branches. The flowers of the Singapore graveyard flower are highly valued by gardeners, and fertilization contributes to their quality. By supplying the right fertilizer, the plant can efficiently transfer nutrients from its roots to its flowers, resulting in large, vibrant, and long-lasting blooms. Proper fertilization also enhances the overall health of the plant, making it more resistant to diseases.

What are the sunlight requirements for the Singapore graveyard flower?

The Singapore graveyard flower, also known by its botanical name Plumeria obtusa, thrives under specific sunlight conditions to emulate its native, light-drenched ecosystems. Full sun exposure, defined as more than 6 hours of direct sunlight a day, is ideal for its robust growth, whereas partial sun, about 3-6 hours of sunlight, is also tolerable. It's essential to watch how sunlight moves through your garden to ensure you plant your Singapore graveyard flower in a spot that offers the right balance of light and shade, ensuring the plant's happiness.

What temperature is best for the flowers in Singapore graveyards?

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.

What should I do if I give too much or too little water to my Singapore graveyard flower?

Outdoor plants, especially newly planted ones or seedlings, are prone to lack of watering. It is important to remember to water them enough for the first few months, while the tree is still small or newly planted. Once the roots are established, these plants can rely on rain most of the time. When it comes to Singapore graveyard flowers planted in pots, overwatering is often a problem. If you accidentally overwater your plant, it is important to act quickly. Stop watering the plant immediately to minimize the effects of overwatering. Take the plant out of its pot to inspect the roots. If none of the roots have developed root rot, you can return the plant to its container. However, if you find signs of root rot, trim away any affected roots and consider applying a fungicide to prevent further damage. Finally, repot the Singapore graveyard flower in well-draining soil. On the other hand, underwatering is a simple issue to fix. If you notice that the plant's leaves are drooping, drying out, and falling off, it means the plant is not getting enough water. Correct the watering frequency by giving the plant more frequent waterings. The leaves will quickly regain their fullness after sufficient watering. Make sure to adjust your watering schedule as soon as you notice underwatering happening.

When should I fertilize my flowers in a Singapore graveyard?

To ensure the optimal growth and blooming of a Singapore graveyard flower, it is best to fertilize during early spring as it transitions out of dormancy and begins to produce buds. This timing provides the plant with ample energy to support its overall development. However, it is worth noting that fertilizing during this period is not the only opportunity to nourish the plant. A second feeding in the fall, although smaller in scale, can still be beneficial. It is also worth mentioning that some gardeners opt to fertilize their Singapore graveyard flower during planting, but this step may not always be necessary.

What are the consequences of incorrect light exposure for the Singapore graveyard flower?

Inadequate or excessive light exposure can have significant adverse effects on the health of the Singapore graveyard flower. Insufficient sunlight may lead to less vigorous growth, fewer flowers, or leaves dropping, while too much direct light can cause foliage scorching. To support growth in less sunny spaces or during winter, artificial lighting like LED lights can provide the necessary wavelengths of light. These lights should be placed 12-36 inches above the plant and kept on for 8-12 hours a day to mimic natural sunlight conditions.

Does the Singapore graveyard flower need different temperatures at different stages of growth?

The Singapore graveyard flower can grow in different phases without needing temperature changes. However, it is important to maintain consistency and avoid wild temperature fluctuations, as this can slow down its growth. It is recommended to keep the plant in a controlled environment, within the optimal temperature range of 75℉ to 90℉ (25-32℃), preferably above the lower limit. While going above 90℉ (32℃) is not ideal, the plant, being tropical, can handle it. On the other hand, exposing the plant to temperatures below 50℉ (10℃), especially below 40℉ (5℃), can cause direct damage to this heat-loving species.

How frequently should I give water to my Singapore graveyard flower?

Growing most outdoor plants naturally relies on rainfall for watering. However, if your area lacks rainfall, there are specific watering guidelines to follow. During the spring and fall, watering every two weeks should be sufficient. In the summer, more frequent watering is necessary. During the winter, when plants need less water due to slower growth, it's best to water them sparingly, and sometimes no additional watering is needed. If you have a young or newly planted Singapore graveyard flower, more frequent watering is recommended to help it establish and grow into a more adaptable and drought-tolerant plant. For potted plants, there are two main approaches to determine watering frequency. One option is to follow a predetermined watering schedule, such as once a week or every other week. However, this may not account for the unique conditions of your Singapore graveyard flower's growing environment. Another option is to base watering frequency on soil moisture. It's generally best to wait until the top two to four inches of soil (about ⅓ to ½ the depth of the pot) have completely dried out before watering again. This approach allows you to adjust the watering frequency based on the specific needs of your plant, considering factors like seasonal changes in water requirements.

When is the best time to not use fertilizer on my Singapore graveyard flower?

Like many plants, you don't need to fertilize your Singapore graveyard flower during winter. This is because the flower is in a phase called dormancy, and it doesn't require much energy from the soil to grow. If you do fertilize during winter, there's a higher chance of negative effects from overfertilization. The best times to feed your Singapore graveyard flower are early spring and fall. During most of spring and summer, the plant won't need fertilizer. It's also a good idea to avoid feeding if the plant is exposed to hot or dry conditions.

What are the symptoms of inadequate light exposure in Singapore graveyard flowers?

Singapore graveyard flowers exhibit several symptoms when they don't receive enough light, such as new leaves growing smaller, longer spaces between leaves or stems leading to leggy or sparse growth, and early leaf drop to conserve resources. Growth may slow down or stop, new leaves can appear lighter in color or yellow due to chlorosis, and the plant may suffer from sunscald, leaf curling, wilting, or leaf scorching if exposed to too much direct sunlight. These symptoms help identify the need for adjusting the plant's exposure to light.

Does the Singapore graveyard flower require varying temperatures for each season?

The Singapore graveyard flower is a low-maintenance plant that doesn't require different temperatures for different seasons. The key to caring for this plant is to keep it in an environment with optimal temperatures, which is why it's recommended to keep it indoors. This allows you to control the temperature regardless of the outdoor climate. Another important aspect for tropical species like this flower is light. It prefers a partial side level of sun exposure, meaning it should receive dappled or filtered light indoors. Bright but indirect light is the best option to promote healthy growth. Exposing the plant to too much direct sunlight can have a negative impact on its leaves and growth potential.

ALSO IN THE LIBRARY

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