The plant often referred to as the “jumping jack flower” is botanically known as Triteleia laxa, a charming perennial corm. It is also recognized by several other common names, including Ithuriel’s Spear, Grass Nut, Triplet Lily, Pretty Face, and Wild Hyacinth. The name “jumping jack flower” likely stems from its upright growth habit and its star-shaped blooms that appear to burst forth on slender stems. This native plant is valued for its low-maintenance nature and vibrant floral display.
Understanding the Jumping Jack Flower
Triteleia laxa produces distinctive star-shaped or funnel-shaped flowers, typically appearing in shades of blue, purple, or violet, though white varieties exist. The individual flowers, measuring approximately 3 to 4 centimeters in length, are arranged in loose, open clusters called umbels atop tall, leafless stems. These wiry stems can reach heights ranging from 15 to 36 inches (37 to 90 cm), with the flower clusters themselves spanning up to 6 inches (15 cm) in diameter. The plant’s foliage consists of narrow, grass-like basal leaves that often begin to wither as the blooms emerge.
Flowering generally occurs from mid-spring through early summer, typically between April and July, providing a colorful display. This species is native to the western United States, with a strong presence in California and southwestern Oregon. It thrives in various habitats, including grasslands, open forests, and woodlands. Triteleia laxa is adaptable to a range of climates, growing well in USDA Plant Hardiness Zones 6 through 10, and can survive in Zone 5 with adequate winter protection.
Planting and Growing Jumping Jack Flowers
Successful cultivation of Triteleia laxa begins with selecting an appropriate site. The plant performs best in locations that receive full sun, which promotes more intense flower color and abundant blooms, though it can tolerate partial shade. Well-draining soil is a fundamental requirement, as excessive moisture can lead to corm rot. While adaptable to various soil types, Triteleia laxa prefers sandy or loamy compositions, tolerating clay soils as well. An ideal soil pH ranges from slightly acidic to neutral, typically between 6.0 and 7.5.
Planting of Triteleia laxa corms is typically done in the fall in temperate regions, allowing them to establish roots before spring growth. In colder climates, planting can occur in early spring after the risk of severe frost has passed. Corms should be placed with the pointed side facing upwards, usually at a depth of 3 to 5 inches (8 to 13 cm), or approximately three times the height of the corm itself. For a visually impactful display, space the corms 3 to 6 inches (7 to 15 cm) apart, ideally planting them in groups of at least ten.
During its active growth period in spring and early summer, Triteleia laxa benefits from consistent moisture. Water regularly, but allow the soil to dry out almost completely between watering sessions to prevent waterlogging. Once established, especially during its summer dormancy, the plant is quite drought tolerant and requires dry soil conditions.
Fertilization is not always necessary for this plant. If desired, a balanced fertilizer, such as a 5-10-10 formulation, can be applied during the growing season, or a slow-release fertilizer can be incorporated at planting time. It is important to avoid over-fertilizing. For ongoing care, removing spent flowers can maintain appearance, and allowing the foliage to yellow and die back naturally is beneficial, as this process returns energy to the corms for the following season. In milder climates, the corms can remain in the ground year-round, while in colder regions, they might be lifted and stored for winter protection.
Propagating Jumping Jack Flowers
Multiplying Triteleia laxa is primarily achieved through the division of its corm offsets. This process is best performed during the plant’s dormant period, typically in late summer or early fall, or immediately after flowering. To divide, carefully separate the smaller cormlets that form around the parent corm. These offsets can then be replanted individually at the appropriate depth. In colder climates where corms might be lifted for winter storage, they should be kept in a cool, dry, and dark location before replanting in spring.
Propagation by seed is another option, though it is a slower method. Seeds can be sown about 1/4 inch deep as soon as they are ripe, either in autumn or early spring. However, plants grown from seed may take two to three years to reach maturity and produce flowers.
Common Considerations and Uses
Triteleia laxa exhibits considerable resilience in the garden, being generally resistant to most pests and diseases. Gardeners also appreciate its natural resistance to deer browsing. Its versatility makes it suitable for various landscape applications. It is an excellent choice for rock gardens, borders, and naturalized areas, and it performs well in containers. Its long-lasting blooms also make it a favored option for cutting gardens, adding unique texture to floral arrangements.
Beyond its aesthetic appeal, Triteleia laxa attracts pollinators such as bees and butterflies, contributing to garden biodiversity.