Rosita® 3 Yellow
Eustoma grandiflorum
Photo: JohannesBuchner · Wikimedia Commons · (CC BY-SA 4.0)
Extremely uniform, tall, vigorous plants produce 2-3" wide medium-sized double blooms which have a more rose-like shape than many other varieties, almost resembling garden roses. As buds mature, petals curl outward on open blooms, enhancing the rose-like appearance. Flower color is pale creamy yellow. Group 3 for late spring, summer, and fall harvest. Lisianthus is also known as prairie gentian, Texas bluebell, and showy prairie gentian. Pelleted seeds.
Harvest
155-165d
Days to harvest
Sun
Full sun to partial shade
Zones
8–10
USDA hardiness
Height
1-3 feet
Planting Timeline
Showing dates for Rosita® 3 Yellow in USDA Zone 7
All Zone 7 flower →Zone Map
Click a state to update dates
Rosita® 3 Yellow · Zones 8–10
Growing Details
Zone-by-Zone Planting Calendar
| Zone | Indoor Start | Transplant | Direct Sow | Harvest |
|---|---|---|---|---|
| Zone 3 | April – May | June – July | June – August | — |
| Zone 4 | March – April | June – June | June – July | — |
| Zone 5 | March – April | May – June | May – July | — |
| Zone 6 | March – April | May – June | May – July | — |
| Zone 7 | February – March | April – May | April – June | — |
| Zone 8 | February – March | April – May | April – June | — |
| Zone 9 | January – February | March – April | March – May | — |
| Zone 10 | January – January | February – March | February – April | — |
| Zone 1 | May – June | July – August | July – September | — |
| Zone 2 | April – May | June – July | June – August | — |
| Zone 11 | January – January | January – February | January – March | — |
| Zone 12 | January – January | January – February | January – March | — |
| Zone 13 | January – January | January – February | January – March | — |
Complete Growing Guide
Extremely uniform, tall, vigorous plants produce 2-3" wide medium-sized double blooms which have a more rose-like shape than many other varieties, almost resembling garden roses. As buds mature, petals curl outward on open blooms, enhancing the rose-like appearance. Flower color is pale creamy yellow. Group 3 for late spring, summer, and fall harvest. Lisianthus is also known as prairie gentian, Texas bluebell, and showy prairie gentian. Pelleted seeds. According to Johnny's Selected Seeds, Rosita® 3 Yellow is 155 - 165 days to maturity, annual, hybrid (f1). Notable features: Greenhouse Performer, Use for Cut Flowers and Bouquets.
Light: Full sun (6 or more hours of direct sunlight a day), Partial Shade (Direct sunlight only part of the day, 2-6 hours). Soil: Loam (Silt), Sand. Drainage: Good Drainage, Moist. Height: 1 ft. 0 in. - 3 ft. 0 in.. Spread: 0 ft. 9 in. - 1 ft. 0 in.. Maintenance: High. Propagation: Seed.
Harvesting
Rosita® 3 Yellow reaches harvest at 155 - 165 days from sowing per Johnny's Selected Seeds. Expect 2-3" at peak. As an annual, harvest continues until frost ends the season.
This is an ornamental variety — not grown for harvest. Enjoy in the garden landscape.
Storage & Preservation
Fresh Rosita® 3 Yellow blooms last 7-10 days in a clean vase with floral preservative and fresh, cool water (re-cut stems every 2-3 days). Keep arrangements in a cool location (65-70°F) away from direct sunlight, heat sources, and ripening fruit, which produces ethylene gas that shortens flower life.
For longer preservation, dry Rosita® 3 Yellow blooms by hanging stems upside-down in a warm, dark, well-ventilated space (60-70°F, low humidity) for 2-3 weeks. Dried blooms retain their rose-like form and pale yellow color beautifully for 6+ months in arrangements. Alternatively, preserve blooms in silica gel (5-7 days) for more rigid, vibrant color retention, though this method requires careful handling. Glycerin absorption (1-2 weeks) creates long-lasting, pliable stems ideal for mixed dried arrangements.
History & Origin
Rosita® 3 Yellow is an F1 hybrid developed through controlled cross-pollination. Listed in the Johnny's Selected Seeds catalog.
Origin: Nebraska south to Texas.
Advantages
- +Produces stunning rose-like double blooms with elegant outward-curling petals
- +Extremely uniform plants ensure consistent quality across entire crop
- +Tall vigorous growth habit maximizes stem length for cut flowers
- +Extended harvest window through late spring, summer, and fall
- +Easy to grow variety suitable for beginner and experienced growers
Considerations
- -Long 155-165 day production cycle requires significant time investment
- -Pale yellow color may have limited market demand versus other shades
- -Lisianthus requires precise watering and humidity to prevent stem rot
- -Susceptible to powdery mildew in high humidity growing conditions
Companion Plants
French marigolds (Tagetes patula) are the most practical companion here — their scent actively deters whiteflies, and in a zone 7 Georgia summer, whitefly pressure on lisianthus can get ugly fast by late July. Sweet Alyssum pulls in parasitic wasps that hit those same pests, and at 6-8 inches tall it won't shade out a crop that already takes 155-165 days to finish. Give sunflowers a hard pass: they produce allelopathic compounds from both their roots and decaying leaf tissue that suppress neighboring plants, and they attract aphid colonies you don't want anywhere near something this slow to mature.
Plant Together
Marigolds
Repel nematodes and aphids while attracting beneficial insects
Nasturtiums
Act as trap crops for aphids and cucumber beetles, protecting nearby flowers
Sweet Alyssum
Attracts beneficial insects like lacewings and parasitic wasps for pest control
Petunias
Repel aphids, tomato hornworms, and squash bugs with natural compounds
Lavender
Deters moths, fleas, and mosquitoes while attracting pollinators
Cosmos
Attract beneficial insects and provide complementary height and texture
Zinnia
Attract butterflies and beneficial insects while providing long-lasting blooms
Borage
Attracts pollinators and beneficial insects while improving soil health
Keep Apart
Black Walnut
Produces juglone toxin that inhibits growth and can kill sensitive flowering plants
Eucalyptus
Releases allelopathic compounds that suppress growth of nearby plants
Sunflowers
Can shade smaller flowers and release allelopathic chemicals that inhibit germination
Pests & Disease Resistance
Common Pests
Spider mites, whiteflies
Diseases
Powdery mildew, root rot (if overwatered), damping off (seedlings)
Troubleshooting Rosita® 3 Yellow
What you'll see, why it happens, and what to do about it.
Fine webbing on undersides of leaves, foliage looking dull or stippled, sometime around midsummer
Likely Causes
- Spider mites (Tetranychus urticae) — thrive in hot, dry conditions above 85°F
- Overhead watering that's too infrequent, leaving foliage stressed and dusty
What to Do
- 1.Blast the undersides of leaves with a firm stream of water every 2-3 days to knock mite populations back
- 2.Apply insecticidal soap or neem oil in the early morning, and repeat every 5-7 days for 2-3 cycles
- 3.Increase ambient humidity around the planting if conditions are exceptionally dry
Seedlings collapsing at the soil line within the first 2-3 weeks after germination
Likely Causes
- Damping off — typically Pythium or Rhizoctonia fungi, triggered by overwatered, poorly drained seed-starting mix
- Trays kept too wet under low-airflow conditions indoors
What to Do
- 1.Use a sterile, well-draining seed-starting mix and never let trays sit in standing water
- 2.Run a small fan near seedling trays for 30-60 minutes a day to improve surface airflow
- 3.If damping off appears, remove affected seedlings immediately and drench remaining cells with a dilute hydrogen peroxide solution (1 part 3% H2O2 to 4 parts water)
Frequently Asked Questions
How long does Rosita® 3 Yellow lisianthus take to grow from seed to bloom?▼
Can you grow Rosita® 3 Yellow lisianthus in containers?▼
Is Rosita® 3 Yellow easy to grow for beginners?▼
What makes Rosita® 3 Yellow different from other yellow lisianthus varieties?▼
When should I plant Rosita® 3 Yellow seeds indoors to get summer blooms?▼
How often should I water Rosita® 3 Yellow lisianthus?▼
Growing Guides from Wind River Greens
Where to Buy Seeds
Sources & References
External authority sources used in compiling this guide.
- BreederJohnny's Selected Seeds
See the Methodology page for how this data is sourced, what's AI-assisted, and known limitations.