Yellow Trillium
Trillium sessile 'Luteum'
- Stay Protected with Plant Sentry ™
Yellow Trillium is backordered and will ship as soon as it is back in stock.
Plant Sentry™
Plant Sentry™

Plant Sentry™ Protected
Your order is protected by our compliance system that:
- Prevents restricted plants from shipping to your state
- Ensures plants meet your state's agricultural requirements
- Protects gardens from invasive pests and diseases
Delivery and Shipping
Delivery and Shipping
Delivery and Shipping
Fast, Safe Plant Delivery
Ships in 3-4 business days • Tracking provided • Weather protected
Under $50 | $9.99 |
$50 - $99.99 | $14.99 |
$100 - $149.99 | $16.99 |
$150+ | $24.99 |
✓ Zone-specific timing • ✓ Professional packaging • ✓ Health guarantee
Understanding Plant Options
Nature Hills offers plants in two main formats:
- Container Plants: Grown in pots with soil, sized by container volume and plant age
- Bare Root Plants: Dormant plants without soil, sized by height measurements
Container Plant Sizes
Container sizes indicate plant age and growing capacity rather than liquid volume equivalents. Our containers follow industry-standard nursery "trade gallon" specifications, which differ from standard liquid gallon measurements.
Young Plants (6 months to 18 months old)
Container Size | Actual Volume | Metric Equivalent |
---|---|---|
2" x 2" x 3" | 0.18 - 0.21 dry quarts | 0.20 - 0.23 dry liters |
4" Container | 0.31 - 0.87 dry quarts | 0.35 - 0.96 dry liters |
4.5" Container | 0.65 dry quarts | 0.72 dry liters |
6" Container | 1.4 dry quarts | 1.59 dry liters |
1 Quart | 1 dry quart | 1.1 dry liters |
5.5" Container | 1.89 dry quarts | 2.08 dry liters |
Established Plants (18 months to 2.5 years old)
Container Size | Actual Volume | Metric Equivalent |
---|---|---|
2 Quart | 2 dry quarts | 2.2 dry liters |
#1 Container | 2.26 - 3.73 dry quarts | 2.49 - 4.11 dry liters |
5" x 5" x 12" | 3.5 - 4.3 dry quarts | 3.85 - 4.74 dry liters |
Mature Plants (2-4 years old)
Container Size | Actual Volume | Metric Equivalent |
---|---|---|
#2 Container | 1.19 - 1.76 dry gallons | 5.24 - 7.75 dry liters |
#3 Container | 2.15 - 2.76 dry gallons | 8.14 - 12.16 dry liters |
Large Plants (3-5 years old)
Container Size | Actual Volume | Metric Equivalent |
---|---|---|
#5 Container | 2.92 - 4.62 dry gallons | 12.86 - 20.35 dry liters |
#6 Container | 5.25 - 6.01 dry gallons | 23.12 - 26.42 dry liters |
#7 Container | 5.98 - 6.53 dry gallons | 26.34 - 28.76 dry liters |
Bare Root Plants
Bare root plants are sold by height from the root system to the top of the plant. Plants may exceed minimum height requirements.
Common Sizes:
- Trees: 1 foot, 2 feet, 3 feet, 4 feet, 5 feet, 6 feet
- Shrubs & Perennials: 1 foot, 18 inches, 2 feet
Important Notes
Container Volume Specifications
- Trade Gallon Standard: Our containers follow industry-standard "trade gallon" specifications established by the American National Standards Institute (ANSI Z60.1) for nursery stock
- Volume Variations: Actual soil volume may vary due to plant root systems and growing medium settlement
- Age Indicators: Container size primarily indicates plant age and maturity rather than liquid volume equivalents
Growing Conditions
- Plant size can vary based on variety and growing conditions
- Container size helps indicate plant maturity and establishment level
- Larger containers generally mean more established root systems and faster landscape establishment
Seasonal Availability
- Bare root plants are available seasonally when dormant
- Container plants are available throughout the growing season
- Specific varieties may have limited availability in certain sizes
Questions?
For questions about specific plant sizes or availability, please contact our plant experts who can help you choose the right size for your landscape needs.
Plant Highlights
Yellow Trillium highlights at a glance!
Specifications
Specifications
-
Brand
-
Botanical Name
-
Growing Zones
-
Mature Height
-
Spacing
-
Sun ExposureFull Shade
-
Moisture
-
Soil
-
Growth RateFast
-
Pollinator Friendly
-
Fragrant
-
Pruning Time
-
Bloom PeriodSummer

Growing Zones 3-9
Delicate and bashful ephemerals, the Yellow Trillium plants (Trillium sessile 'Luteum') are gorgeous woodland rarities in the wild. But you can enjoy them in your garden and throughout the dappled shade! The unique blooms are solitary pointed petals that form a triangle and are backed by a green triangle of sepals. A single curious bloom floats atop a trio of broad, pointed green leaves. The silvery green and soft green two-tone foliage is a highlight of this plant for the remainder of the summer.
Trillium are classic forest wildflowers that thrive in the same conditions as Lady’s Slippers and Jack-in-the-Pulpits. Individual plants grow 12-18 inches tall and spread 12-24 inches wide at maturity. Loving rich, highly-organic locations where there is plenty of leaf litter and moisture. Blooming 2-3 weeks, eventually forming a fleshy, berry-like fruit in the summer that wildlife love to eat.
These tender perennial rhizomes bloom in the early spring and thrive throughout the USDA growing zones 3 through 9 and gradually colonizing small areas. Trillium are known by many names including Wake Robin, Bethroot, and Stinking Benjamin, and have been held in regard as old-world medicinals back in the day.
Planting and Application:
Yellow Trillium plants only bear a single, solitary flower per plant, so planting in groupings, swaths and en masse is essential to achieving the best display of these rare woodland gems! Wind a row throughout a shade garden, broadcast through a rich forest floor and shady glen, or along the moist footpaths of a heavily shaded backyard.
Plant in clusters along a stream bed or brook and in dappled shade meadows to gain the biggest impact! Early spring ephemerals with fall color, use these lovely specimens throughout bogs and Rain Gardens, along brooks and ponds edges, or create a woodland garden of shade wildflowers.
- Three-Pointed Soft-Yellow Blooms
- Set of Three Two-Tone Green Leaves
- Spring Ephemerals
- Birds & Mammals Eat the Fruit
- Woodland Beds, Meadows & Shade Gardens
#ProPlantTips for Care:
Trillium is a tender perennial that spreads slowly by rhizomes in moist, humus-rich soil. Plant in any partial shade/part sun and prefer to be planted in well-drained and consistently moist soil. Mulch the soil well with 3-4 inches of arborist bark chips to hold in moisture.
- Partial Shade
- Consistent Moisture
- Humus-Rich Soils
- Appreciates Mulched Beds
- Wear Gloves When Handling Roots & Fruit
Delicate woodland ephemerals, the unique Yellow Trillium are curious accents that add their special beauty to your shade gardens! Order quality bulbs today and NatureHills.com will ship your order at the correct planting time for your growing zone!