Large-flowered harlequin flower Sparaxis grandiflora subsp. grandiflora

Water

Harlequin flowers, also known as Sparaxis grandiflora, require moderate watering, especially when the plant is actively growing and blooming. They should be watered deeply but infrequently, allowing the soil to dry out slightly between waterings. Approximately once a week should be sufficient, with about 1 gallon of water per plant during each watering session, depending on the size of the plant and the environmental conditions. It is important to avoid overwatering, as this can lead to bulb rot. During dormancy, after the leaves yellow, reduce watering significantly to mimic the dry summer conditions in its native habitat.

Light

Harlequin flowers thrive in full sunlight, which means they need to be placed in a location where they receive at least 6 to 8 hours of direct sunlight each day. They perform best when they are in a bright and sunny spot, preferably with some protection from the intense midday sun in hotter climates. Good sunlight is essential for the plant to produce its vividly colored, striking flowers.

Temperature

For Harlequin flowers, the ideal temperature range is between 50°F and 70°F. They are hardy to a minimum temperature of around 35°F but cannot survive freezing temperatures. Keep them in an environment that does not drop below this range to avoid damage to the bulbs. The plants enjoy cooler nighttime temperatures, which can help induce better flowering.

Pruning

Harlequin flowers should be pruned to remove spent flowers and dead foliage. This helps to encourage further blooming and maintains the plant's appearance. Pruning should be done as needed during the flowering season. After blooming has finished and the leaves begin to yellow, you can cut the foliage down to the ground, as the plant will enter a period of dormancy.

Cleaning

As needed

Soil

Harlequin Flower thrives in well-draining soil rich in organic matter with a pH ranging from slightly acidic to neutral (pH 6.0 to 7.0). A mix of two parts loam, one part sand, and one part compost or well-rotted manure will create optimal conditions for growth.

Repotting

Harlequin Flowers, which are typically grown from corms, do not require frequent repotting. Repot the plant every 2 to 3 years or when the corms become overcrowded in their current container.

Humidity & Misting

Harlequin Flowers prefer moderate humidity levels but are quite adaptable and can tolerate the drier air found in most homes. No specific humidity level is necessary for their growth beyond normal ambient levels.

Suitable locations

• Indoor

  Place Harlequin Flower in bright, indirect light inside.

• Outdoor

  Plant Harlequin Flower in full sun to partial shade outdoors.

• Hardiness zone

  8-10 USDA

Life cycle

Sparaxis grandiflora subsp. grandiflora, commonly known as Harlequin Flower, begins its life cycle when a seed germinates, usually in the spring or early summer, with the emergence of a sprouting shoot. The plant develops into a vegetative state, growing leaves that photosynthesize and gather energy necessary for its growth and bulb development. Following vegetative growth, the Harlequin Flower enters the flowering stage, typically in late spring to early summer, where it produces vibrant, colorful blooms that attract pollinators, leading to pollination and subsequent seed formation if conditions are favorable. After flowering, the plant sets seeds which then mature, becoming ready for dispersal to generate new plants, thereby completing the reproductive phase. During the fall, as temperatures drop, the above-ground parts of the plant die back, and it enters a period of dormancy where it conserves energy in its bulb underground. With the return of favorable conditions in the next growing season, the cycle begins anew, with the bulb sending up fresh shoots to restart the life cycle.

Propogation

• Propogation time

  Spring

• Propogation: The most popular method of propagation for the Harlequin Flower Sparaxis grandiflora is through division of its corms. The best time to carry out this process is after the foliage has died back, usually in late summer or early fall. To propagate, carefully dig up the clumps of corms and gently separate them by hand, making sure that each new division has at least one growth point. Replant the corms immediately at a depth of about 3 inches (approx. 7.6 centimeters) and space them about 3 to 5 inches (approx. 7.6 to 12.7 centimeters) apart to allow enough room for growth. The new plantings should be watered well to help establish the new roots. Corm division is a straightforward way to increase your stock of Harlequin Flowers and ensure a vibrant display in the following growing season.