The Starlight Express lily is an Orienpet hybrid — a cross between Oriental and Trumpet lilies — that produces 6 to 8 inch fragrant flowers on stems reaching 5 to 6 feet tall by midsummer. Starlight lilies rank among the most reliable perennial bulbs for USDA zones 4 through 9, blooming in late July and early August when most spring perennials have finished. The flowers are creamy white with deep raspberry centers and a powerful evening fragrance that can perfume an entire patio. Get the planting depth right and they will return for 8 to 15 years from a single bulb planting. Get it wrong and they rot in the first wet spring. Here is the care guide based on three growing seasons in zone 5b clay soil and consultation with the Lily Garden in Washington, one of the country’s primary Orienpet breeders.
Choosing and Buying Healthy Bulbs
Buy bulbs in late summer or early fall for fall planting, which produces stronger first-year blooms than spring planting. Look for bulbs at least 18 to 22 cm in circumference — the bigger the bulb, the more flower stems it produces in year one. A 22+ cm bulb routinely produces 5 to 8 blooms; an 14 cm bulb produces 2 to 3.
The Lily Garden, B&D Lilies, and Old House Gardens are the three reliable mail-order specialty sources in the U.S. Box-store bulbs in slick packaging tend to be smaller and drier than specialty-grower bulbs. Expect to pay $6 to $14 per quality bulb. Inspect bulbs on arrival — they should feel firm and heavy with no soft spots or visible mold.
Planting Depth and Soil Prep
Plant bulbs 7 to 9 inches deep measured from the bottom of the bulb to the soil surface. Orienpet lilies want deeper planting than Asiatics or Easter lilies because their tall stems need the root mass below the soil for stability. Bulbs planted too shallowly produce floppy plants that topple in any summer thunderstorm.
Amend the planting hole with compost and a handful of horticultural grit or coarse sand. Drainage matters more than soil fertility — lily bulbs rot in standing water within two weeks. In heavy clay soil, plant on a slight mound or in a raised bed at least 12 inches deep. Test soil pH; Starlight prefers slightly acidic to neutral, 6.0 to 7.0.
Sun, Spacing, and Companion Planting
Plant in full sun (6+ hours of direct sun daily) for best blooming in the northern half of the country. In zones 7 and warmer, give them morning sun and afternoon shade — full southern exposure scorches the petals by midday. Space bulbs 12 to 14 inches apart for established clumps; closer planting produces a fuller display in year one but requires division by year four.
The roots want cool, shaded soil while the foliage wants sun — known as “feet in shade, head in sun.” Plant low-growing perennials around the base: hardy geraniums, heuchera, lady’s mantle, or low daylilies. These companions also hide the leggy lower stems as the lilies mature.
Watering Through the Growing Season
Lilies need consistent moisture from emergence in mid-spring through flowering in late July. About 1 inch of water per week from rainfall or supplemental irrigation. Drip irrigation works better than overhead watering — wet leaves invite botrytis and the foliage burns under midday sun if water beads sit on the surface.
Stop supplemental watering after bloom completes in early August. The bulbs prepare for dormancy and excess moisture during this phase causes rot. In drought conditions, the foliage may yellow early; this does not harm the bulb if the timing is post-bloom.
Fertilizer Schedule
Feed three times during the growing season. First application: as shoots emerge in early spring, with a balanced 10-10-10 granular at 1 cup per 10 square feet, scratched into the surface and watered in. Second application: just before flower buds open in early July, with a low-nitrogen 5-10-10 or bulb food. Third application: immediately after bloom, with bone meal at 2 tablespoons per plant worked lightly into the soil.
Avoid high-nitrogen lawn fertilizers near lily plantings. Nitrogen produces lush foliage at the expense of flowers and weakens stems. If lilies grow in a lawn-adjacent bed, mulch a 24-inch ring around each clump to prevent lawn fertilizer drift.
Staking and Wind Protection
Mature Orienpet stems reach 5 to 6 feet and carry 6 to 10 flower buds per stem. A summer thunderstorm or a strong evening wind can topple even properly-planted bulbs. Stake at planting time with a 6-foot bamboo cane positioned 4 inches from the bulb. Use soft jute twine in a figure-eight pattern, tying loosely at 2-foot intervals up the stem.
Tomato cages work for clumps of 5 to 8 bulbs planted together — install the cage at planting, the stems grow up through the rings naturally. The peony hoop systems from Gardener’s Supply ($35 each) work especially well for established clumps that have grown too dense to stake individually.
Pest and Disease Management
The single serious pest is the red lily leaf beetle, an introduced European pest now common in the northeastern U.S. and parts of the Pacific Northwest. Adults are bright red, 1/4 inch long, and lay eggs on the leaf undersides starting in early May. Larvae cover themselves in their own waste to deter predators — a recognizable disgusting black blob on the leaf.
Hand-pick adults daily during May and June. For heavier infestations, treat with neem oil concentrate (Bonide Neem Oil, $18 per pint, mixed at 2 tablespoons per gallon of water) on a 7-day cycle. Spinosad-based insecticides like Captain Jack’s Dead Bug Brew kill larvae effectively at 4 tablespoons per gallon.
Botrytis fungal blight appears as gray-brown leaf spots during wet humid summers. Improve air circulation by thinning crowded clumps, water at the base only, and apply a copper fungicide preventatively if your area has consistent botrytis pressure.
Winter Care and Mulching
Apply 3 to 4 inches of shredded leaf or pine bark mulch after the ground freezes in late November. The mulch insulates the bulbs from freeze-thaw cycles and prevents heaving. Remove half the mulch in early spring as shoots emerge to allow soil warming.
In zones 4 and colder, add an extra 2 inches of mulch and consider covering the planting with cut evergreen boughs from a Christmas tree. The boughs catch additional snow and provide deeper protection without the matting that thick straw or wet leaves cause.
Dividing Established Clumps
Starlight lilies bulk up by producing offset bulbs around the parent. After 4 to 6 years, clumps become crowded and bloom counts drop. Divide in fall after foliage dies back. Dig the entire clump with a spading fork, gently separate the bulbs by hand (do not cut), and replant immediately at the proper depth.
Discard any bulbs with soft spots or visible mold. Healthy bulbs replant immediately into amended soil; do not let them sit in the sun for more than an hour or they dry out. A properly maintained Starlight planting produces stronger blooms each year for over a decade with one division partway through.
