lisianthus Grandiflorum Doublini I Rose

lisianthus Grandiflorum Doublini I Rose seeds

(Eustoma grandiflorum — Doublini Series Group I — Professional Cut Flower Variety)

Doublini I Rose belongs to Sakata’s Doublini series — the definitive miniature rose lisianthus line — and delivers the full series performance in warm rose-pink. Doublini is the mini-rose without thorns: fully double, petite rose-shaped flowers crowning the tops of the stems for an attractive and long-lasting effect in the vase, with masses of strong, small, truly double flowers carrying the structural hardness of Sakata’s Rosita series.

Doublini I Rose distils this original appeal into its most concentrated form — a stem carrying not one but a cluster of small, perfect, fully double rose-shaped blooms in a color that reads as a warm, clear rose-pink with depth and softness.

The rose-pink color of Doublini I Rose sits in the mid-range between blush and cerise — warm enough to carry presence in a mixed arrangement, soft enough to combine without conflict with white, cream, lavender, and silver tones. In the Doublini format, with its top-flowering cluster habit, this color delivers maximum visual density at the stem apex: a bouquet-ready arrangement in a single stem.

The top-flowering plant habit provides good transportability — an important practical characteristic that means Doublini I Rose stems arrive at their destination in the same condition they left the garden, without petals bruised or displaced by the movement of long, loosely branching stems. Combined with the 14–21-day vase life that is the hallmark of all Sakata lisianthus varieties, this makes Doublini 1 Rose one of the most practical and rewarding cut flowers available to the home grower in Kuwait’s cool season.

Variety Details

• Botanical Name: Eustoma grandiflorum (syn. Lisianthus russellianus)
• Series: Doublini
• Variety: Doublini I Rose
• Flowering Group: Group I (Winter/Spring production: November–April)
• Breeder: Sakata Seed Corporation (Japan)
• Flower Style: Petite double rose-shaped — top-flowering habit
• Seed Type: F1 Hybrid, pelleted
• Plant Type: Annual (perennial in frost-free climates)
• Family: Gentianaceae
• Common Names: Lisianthus, Prairie Gentian, Texas Bluebell, Japanese Rose

Key Features

• Sakata professional breeding — Doublini is the definitive miniature rose lisianthus series
• Petite fully double rose-shaped blooms — fundamentally different form from standard lisianthus
• Top-flowering plant habit — blooms cluster at stem apex for immediate bouquet-ready presentation
• Warm rose-pink colour — one of the most universally requested tones in the cut flower trade
• Strong stems of 75–85 cm with excellent transportability — Rosita-level structural hardness
• Group I classification — Winter/Spring production window, ideal for Kuwait’s cool season
• Exceptional vase life — 14–21 days in clean water with flower food
• No thorns — all the visual impact of a spray rose with none of the handling difficulties
• Pelleted seeds for easier handling and more precise sowing
• Not fragrant — lisianthus is currently a non-fragrant cut flower species
• Requires patience — slow from seed to flower (approximately 5–6 months)

Plant Information

• Height: 75–85 cm
• Spread: 25–35 cm
• Plant Type: Annual
• Habit: Upright, top-flowering — blooms clustered at stem apex
• Flower Size: Small, petite — approximately 3–4 cm across per individual bloom
• Flower Form: Fully double, rose-shaped miniature
• Flower Colour: Warm rose-pink
• Stem Structure: Strong, upright, good transportability

Germination Instructions

• Lisianthus requires careful attention to temperature throughout the entire growing process — this is the single most important factor between success and failure. Sow one pelleted seed per cell into a deep-cell seedling tray.
• Light is needed for germination, but a thin layer of fine vermiculite covering the seed will help to control algae growth.
• Keep growing media evenly moist but not saturated — adequate moisture is essential to dissolve the pellet coat around the seed. Do not allow the media to dry out at any point during germination.
• Covering the trays with clear plastic domes helps maintain consistent moisture and temperature.
• During the germination phase of 10–15 days, maintain temperatures at 20–22°C.
• After germination, grow seedlings on at 15–20°C with good ventilation — excess moisture causes damping off and mold.
• Seedlings are very slow to grow and can take up to 75 days to reach readiness for transplanting.
• Rosetting — where the plant fails to elongate and produces only a flat basal cluster of leaves — occurs when temperatures exceed 29°C during the day or 21°C at night for extended periods, or if seedlings dry out or are overwatered.
• Keeping night temperatures cool at 13–15°C minimizes rosetting even if daytime temperatures rise higher than desired.
• For Kuwait: sow in air-conditioned conditions in late August to September.
• Maintain seedling trays in a cool indoor space where night temperatures do not exceed 20°C throughout the full growing period.
• If rosetting occurs despite precautions, place affected plants near an air conditioning vent at approximately 10°C for 30 days to reverse the condition before transplanting.

Growing Tips

• Grow lisianthus in healthy soil rich in organic matter with an ideal pH of 6.5–7.0. Once seedlings have 4 true leaves, they are ready to transplant — approximately 60–75 days from seeding.
• Do not let the plugs become root-bound as this causes flowers to bloom earlier on short stems.
• Plant seedlings 10–20 cm apart, keeping the crown at or just above the soil line to prevent stem rot.
• Keep soil evenly moist but never saturated.
• Do not let the plants dry out.
• Water at the base of the plant only — overhead watering causes spotting on the petals.
• Provide bamboo stakes or a simple horizontal string net supported at 40 cm height to keep stems upright as plants grow.
• Once budding and flowering are initiated, rosetting is no longer a concern and the plants can handle more temperature fluctuation. Harvest when one or more flowers on the stem are open — harvesting or pinching the first bloom encourages a more uniform set of subsequent blooms.
• Harvest in the morning when temperatures are coolest and place stems immediately into clean buckets of cool water.

Gulf Planting Season

• Indoor sowing (air-conditioned, pelleted seeds in cell trays): August
• Grow on indoors in air-conditioned conditions: August to October
• Transplant outdoors to final bed position: November
• Peak cut flower harvest: In Spring
• Note: Lisianthus is one of the most temperature-sensitive crops available from seed — successful results in Kuwait depend entirely on completing the seedling phase indoors in air-conditioned conditions.
• Night temperatures must not exceed 21°C during the seedling phase.
• The Doublini I Rose Group I designation confirms its suitability for Kuwait’s cool season harvest in Spring.
• Do not transplant outdoors until daytime temperatures are consistently below 32°C.

Garden & Floral Uses

• Doublini I Rose is the warm-toned companion to Doublini I Blue in the Doublini range — and in cut flower terms the more immediately versatile of the two.
• Rose-pink is the single most requested color in the global floral industry, and in the Doublini miniature rose format it delivers this color with a softness and layered depth that flat-petalled pink flowers cannot match.
• In arrangements, Doublini 1 Rose pairs naturally with Alissa I Pure White for a classic bridal combination, with Alissa I Rose for a tonal rose-pink monochromatic scheme, and with Doublini 1 Blue for a complementary contrast arrangement that references the full natural color range of the lisianthus species.
• In Kuwait’s cool-season cutting garden, growing all three Doublini and Alissa varieties together creates a complete professional-quality lisianthus collection covering large showcase blooms in white and rose, and delicate miniature rose clusters in rose-pink and blue-violet — enough variety for arrangements of entirely different character from the same beds throughout spring peak harvest season.