Stargazer lilies (Lilium orientalis ‘Stargazer’) are fragrant perennials that bloom in mid- to late summer, carrying large pink and white petals that curve backward around long, showy stamens. Breeders developed the hybrid in the late 1970s by crossing Lilium auratum and Lilium speciosum, and they selected it to face upward rather than droop, which puts the spicy fragrance and bold color on display. Mature plants reach about 4 feet tall and 1 foot wide, and the flowers make dependable cut stems for most of the summer. The plant is toxic to cats, so placement matters in pet households. Each flower head can span 6 to 8 inches, and the perfume is strong enough to scent an entire patio on a still evening. Keep cut stems away from cats as well, because the same toxin appears in the flowers and pollen.
Site selection decides success with lilies the same way it does with woody ornamentals. The attention gardeners give to Japanese maples in the landscape, where light and soil determine fall color, applies equally to a lily bed, so it pays to read the growing requirements before the bulbs go in.
Planting Stargazer Lily Bulbs
Plant Stargazer bulbs in fall or early spring, depending on your climate. Choose firm, plump bulbs with no soft spots, and set them with the pointed tip facing up. Bulbs sold in paper bags dry out quickly, so plant them within a week of purchase or store them briefly in a cool, dark place.
Depth, spacing, and soil
- Dig a planting hole 6 to 8 inches deep.
- Set the bulb pointy side up with the roots spread downward.
- Space bulbs 8 to 12 inches apart so the clump fills in over a few seasons.
- Backfill with loose soil and water once to settle the bed.
Lilies want loamy, moist but well-draining soil with a neutral to slightly acidic pH. Heavy clay holds water around the bulb and causes rot, the same failure mode that pushes succulent growers toward gritty mixes; the drainage lessons in growing succulents made simple transfer to lily beds almost word for word.
Fall planting suits zones 7 to 9, where the soil stays workable and bulbs establish roots before winter. In zones 4 to 6, early spring planting after the ground thaws is safer, because a wet fall can rot bulbs before they settle in.
Where bulbs fail
- Soggy soil rots bulbs before they sprout
- Shallow planting exposes bulbs to summer heat
- Crowded spacing cuts airflow and invites mold
- Bulbs planted too deep emerge late and bloom weakly
Light and Soil Requirements
Stargazer lilies flower best in full sun, which means at least six hours of direct light a day. In hot southern climates, morning sun with afternoon shade keeps the petals from fading early and extends the bloom display. In cooler northern zones, give the plants all the sun they can get.
Soil pH and organic matter
A pH between 6.0 and 7.0 suits the plants, slightly acidic to neutral. Work compost into the bed before planting; the organic matter holds moisture without waterlogging the roots. Shrub growers learn the same rule when they study tips for growing gorgeous hydrangeas: soil preparation decides how well a plant blooms in its second and third year.
Testing and amending the bed
A soil test kit reports pH and nutrient levels in minutes. Add lime to raise the pH or sulfur to lower it, and mix in compost rather than raw manure, which can burn young bulbs. Recheck the bed every few years because mulch and rainfall slowly shift pH. If your soil is heavy clay, raise the bed or plant on a slope so water moves away from the bulbs. Raised beds and berms give lilies the drainage they need without replacing the whole garden.
| Factor | Requirement |
|---|---|
| Sun | Full sun, 6+ hours; afternoon shade in hot zones |
| Soil | Loamy, moist, well-draining |
| pH | 6.0 to 7.0, neutral to slightly acidic |
| Hardiness | USDA zones 4 to 9 |
| Mature size | 4 ft tall, 1 ft wide |
| Bloom time | Mid- to late summer |
Watering, Feeding, and Ongoing Care
Keep the soil evenly moist during the growing season, especially while buds form. A layer of mulch around the base holds moisture and keeps the roots cool through summer heat, and it also suppresses the weeds that compete with shallow bulbs. Check the soil with a finger before watering; if the top inch is still damp, wait a day.
Fertilizer schedule
- Spring: apply a balanced fertilizer as shoots emerge
- Early summer: repeat feeding before buds open
- After bloom: stop feeding so the bulb hardens off
Water at the base rather than over the foliage to keep the leaves dry and reduce disease pressure. During dry spells, lilies need about 1 inch of water per week, supplied by rain or irrigation.
Supporting tall stems
At 4 feet tall, Stargazer stems lean under the weight of several blooms, especially after rain. Insert stakes at planting time and tie the stems loosely with soft twine as they grow. Gardeners who grow tall canna lilies stake before the wind arrives, and the canna lily care habit of early support works for lilies too.
Pruning and Propagating Stargazer Lilies
Pruning for next season
Remove spent flowers by snapping off the bloom head, but leave the stem and leaves in place until they yellow naturally. The foliage feeds the bulb for next year’s bloom, so cutting it early shrinks the flowers you get the following summer. Trim the stem to the ground only after it browns in late fall. Deadheading also prevents seed formation, which siphons energy the bulb could store. If you want seed for breeding, leave one pod, but know that seedlings will not match the parent hybrid.
Propagation methods
- Divide mature clumps every 3 to 4 years in early spring.
- Peel small bulblets off the base and plant them 2 inches deep.
- Grow bulblets in a nursery bed for a season before moving them.
- Start any stem bulbils in pots until roots form.
Divided bulbs usually bloom the same year, while bulblets take one to two seasons to reach flowering size. Indoor gardeners raising plants in pots can borrow the patience routines of growing eucalyptus indoors, where slow establishment is normal and overwatering kills more plants than pests do.
Growing Stargazer Lilies in Pots and Overwintering
Container growing
Stargazers grow well in pots at least 12 inches deep. Use a potting mix with extra perlite for drainage, plant one bulb per 6-inch pot or three per 12-inch pot, and move containers to a sheltered spot for the winter months. Container lilies also brighten a patio or balcony through the summer. Pots also give gardeners in zone 3 a way to grow Stargazers that would not survive the winter outdoors. Sink the whole pot into a bed for summer, then lift it in fall and move it to storage. Mark the pot with the variety name and planting date so spring care is easy to plan.
Overwintering in the ground
- Zones 4 to 6: mulch heavily after the first frost
- Zones 7 to 9: leave bulbs in place and mulch lightly
- Containers: move to an unheated garage or sink the pot into the ground
Container plants face colder roots than in-ground plants because the pot wall exposes the soil to air on every side. The indoor winter habits of houseplants such as growing ivy indoors, which slow down and need far less water in low light, mirror what potted lilies need in a cool garage: barely any water until spring.
Common Pests and Diseases of Stargazer Lilies
Pests to watch
- Aphids cluster on new growth and developing buds
- Lily leaf beetles chew ragged holes in the foliage
- Deer and rabbits graze young shoots in spring
- Spider mites appear on stressed, dry plants
Disease prevention
Botrytis blight shows up as brown spots on leaves during cool, wet weather; improve airflow and water at the base instead of overhead. Mosaic virus patterns on the leaves mean the bulb is infected, so dig it up and discard it. Healthy bulbs resist most problems, and the preventive habits found in routine azalea care, clearing fallen leaves and checking foliage weekly, keep a lily bed clean from season to season. Inspect new bulbs before planting and reject any that feel soft or show mold.
Aphids can be washed off with a firm stream of water, and lily leaf beetles are best removed by hand in the morning when they are slow. Keeping the bed free of plant debris removes the hiding places these pests use between seasons.
With the right site, a bit of support, and a clean bed, Stargazer lilies return reliably for years, and each clump produces more stems as it matures. The payoff is a summer of fragrant, upfacing blooms that work as well in a vase as they do at the back of a border.