- USDA hardiness zones:
Jonquilla daffodil (Division VII). A jonquilla daffodil features 1-5 usually fragrant flowers per stem, each with spreading perianth segments (petals) and a small corona (cup). Narrow, reed-like, dark green leaves appear in upright clumps. ëStratosphere is a tall cultivar that rises 22-24î high in spring, usually producing 2-3 flowers per stem. Each flower (to 2.5î across) features golden yellow petals and a deep gold to orange-gold cup. Flowers are fragrant. Blooms in late mid-season (April-May in St. Louis).
- Full sun to part shade
Easily grown in average, medium moisture, well-drained soil in full sun to part shade. Best in organically rich, sandy loams that drain well. Plant bulbs 4-6\ deep and 3-6î apart in fall. After the flowers have bloomed, the top portion of each flower stem may be removed, as practicable, to prevent seed formation, but foliage should not be cut back until it begins to yellow. Flowers usually face the sun, so bulbs should be grown with any shade areas at the rear of the planting. Bulbs are easily grown, multiply rapidly and can be left undisturbed for a number of years."
Size and growth:
- 1.5 to 2.0 feet
- 1.0 to 1.5 feet
Bloom / flowers:
- April - May
- Golden yellow with gold to orange-gold cup
Showy flowers, Fragrant flowers, and Yellow
Best in beds, borders, wild gardens, open woodland areas, in front of shrubs or massed under trees. Best planted in quantity, i.e., from smaller groupings of at least 6 bulbs to large sweeping drifts. Mixes well with other spring-flowering bulbs.
No serious insect or disease problems. Bulb rot may occur in poorly-drained soils.