Eustoma grandiflorum Alissa Yellow III F1 | Group 2 Lisianthus

Eustoma grandiflorum Alissa Yellow III F1 produces large, fully double flowers in a soft yellow shade. Abundant petals with lightly fringed edges give the blooms an elegant, romantic appearance — beautiful for summer bouquets, wedding flowers and delicate floral arrangements.

Sturdy stems, firm petals and long vase life make this variety an attractive choice for growing cut flowers. Large, rounded buds add interest and texture before the flowers open.

Plant Information

Botanical Name: Eustoma grandiflorum
Common Name: Lisianthus
Series: Alissa
Variety: Yellow III F1
Flowering Group: 2
Life Cycle: Grown as an annual
Flower Colour: Soft yellow
Flower Type: Large, fully double, with lightly fringed petals
Height: Approximately 80–90 cm under the series’ recommended growing conditions
Seed Form: Pelleted
Plug Production: Approximately 70–77 days under the breeder’s recommended conditions
Time to Flower: Depends on temperature, light and daylength
Position: Bright and sheltered; suitable for greenhouse growing
Soil: Fertile and well drained
Uses: Cut flowers, wedding bouquets and floral arrangements

Soft Yellow Flowers for Elegant Bouquets

Alissa Yellow III F1 brings a gentle, warm colour to floral arrangements. Its generously filled flowers combine beautifully with white, ivory, pale apricot, blush pink and lavender blooms, as well as fresh green foliage.

Use it in a soft pastel bouquet or as a subtle yellow accent in a mixed arrangement. The lightly fringed petals create a refined texture, while the rounded buds complement the open flowers.

Firm petals help reduce damage during harvesting and handling, and strong stems support the large blooms.

What Does “Yellow III” Mean?

“III” is part of the variety name and distinguishes this selection from Alissa Yellow. It does not mean Flowering Group 3: the breeder lists Alissa Yellow III in Group 2.

The flowering group helps growers plan production according to temperature and light conditions. It does not indicate frost hardiness.

Sowing & Germination

Lisianthus grows slowly during its early stages, so start seeds indoors well ahead of the intended flowering season. Provide supplementary lighting when natural light is limited.

• Sow one pelleted seed per cell, preferably in deep plug trays.
• Use a fine, moist, well-drained seed-starting substrate.
• Place seeds on the surface and do not cover with compost or vermiculite.
• Keep the surface evenly moist so the pellet coating can dissolve.
• During germination, the breeder recommends a substrate temperature of approximately 21°C.
• Once seedlings are established, grow on at approximately 17–20°C, with good light and ventilation.

For more uniform germination and to reduce rosetting, the Alissa culture guide recommends holding freshly sown trays at 5–8°C for approximately three weeks, before moving them into warmer conditions. This propagation method requires controlled temperatures.

Avoid prolonged high temperatures during early growth, as these can encourage rosetting and delay flowering stem development.

Transplanting & Care

Transplant when seedlings have four true leaves, before their roots become crowded in the cells. Handle the root ball gently and maintain the original planting depth.

Plant into fertile, well-drained soil. Keep moisture consistent, particularly after transplanting, while avoiding waterlogging.

Feed moderately and avoid excessive nitrogen. Support netting helps keep the long flowering stems straight. Provide regular ventilation when growing in a greenhouse.

Flowering time varies with growing conditions. Warmer temperatures, stronger light and longer days generally encourage faster development. The 70–77-day plug production period refers to the seedling stage, not the total time from sowing to flowering.

Cutting for the Vase

Harvest stems when two to three flowers are open. Place them promptly in clean water and use cut-flower food. Keep arrangements away from direct sunlight and heat to help preserve flower quality.

Eustoma grandiflorum Alissa Yellow III F1 combines soft yellow double flowers, sturdy stems and decorative buds for beautiful home-grown bouquets.