How to Grow Lilliput Mignon
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Lilliput Mignon
Dahlia × pinnata 'Lilliput Mignon'
flowerLilliput Mignon dahlias are dwarf ornamental flowering plants that produce abundant small, colorful pompom-style blooms on compact plants. These diminutive dahlias are perfect for containers, borders, and small garden spaces, reaching only 12-18 inches tall while producing flowers continuously throughout the growing season.
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Example Lilliput Mignon timeline · Pittsburgh, PA (Zone 6b)
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Plant Lilliput Mignon
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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First Lilliput Mignon blooms
Around Jun 6≈ 50 days after planting
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 7-10; can be grown as annuals in cooler zones
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Tuber/Seed Germination
2-3 weeksTubers or seeds are planted and begin sprouting. Initial root and shoot development occurs underground.
Keep soil warm (60-70°F) and consistently moist. Provide bright light if growing from seed indoors. Wait until soil is warm and frost risk is gone before transplanting outside.
Vegetative Growth
3-4 weeksYoung plants develop compact, bushy foliage with multiple stems. Leaves are feathery and finely divided. Plants reach full compact height of 12-18 inches.
Pinch back growing tips when 6 inches tall to encourage branching and fuller shape. Water regularly. Apply balanced fertilizer every 2-3 weeks. Remove any dead leaves.
Bud Formation
1-2 weeksFlower buds begin to form at stem tips. Plant continues to be dense and bushy with visible bud clusters developing.
Maintain consistent watering and fertilizing schedule. Switch to lower-nitrogen, higher-phosphorus fertilizer to encourage flowering. Continue to deadhead any spent blooms.
Flowering
8-12 weeks (continues until frost)Abundant small pompom-style flowers (1-2 inches diameter) open in various colors depending on variety. Continuous blooming throughout season.
Deadhead spent flowers regularly to encourage more blooms. Maintain consistent moisture. Apply flowering fertilizer weekly. Watch for spider mites and powdery mildew in humid conditions.
Late Season/Dormancy
VariableAs temperatures cool and days shorten, flowering slows. In zones 7-8, plants may be dug for tuber storage; in warmer zones, they continue producing.
In cold zones, dig tubers after first frost, clean, dry, and store in cool (50-60°F), dry location. In warm zones, cut back and mulch to protect for winter regrowth.
Common Pests
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Spray with water to dislodge; use neem oil or miticide if severe. Increase humidity and air circulation.
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Ensure good air circulation; avoid overhead watering. Apply sulfur dust or fungicide at first sign. Remove affected leaves.
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Use yellow sticky traps; spray with insecticidal soap or neem oil. Remove heavily infested flowers.
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Hand-pick in evening; use beer traps or copper barriers. Apply diatomaceous earth around base.
Uses
Edible Flowers for Garnish
CulinaryThe petals of some dahlia varieties are edible and can be used as decorative garnishes on salads, desserts, and cocktails. They add visual appeal and a mild, slightly sweet flavor. [source]
Cut Flower Arrangements
HouseholdLilliput Mignon dahlias are excellent for cutting and arranging in bouquets and floral displays. Their small, pompom blooms are long-lasting and perfect for tight arrangements. [source]
Dried Flowers for Crafts
CraftThe small flowers dry well and can be used in dried arrangements, pressed flower projects, and craft applications. They retain good color when properly dried. [source]
Pollinator Support
WildlifeDahlia flowers are attractive to bees, butterflies, and other pollinators. Growing these plants supports local pollinator populations throughout the blooming season. [source]
Container and Patio Gardens
HouseholdThe compact size makes these dahlias ideal for growing in pots, window boxes, and small spaces. They can transform patios and entryways with continuous color. [source]
Harvest Tips
Begin deadheading once flowers open to encourage continuous blooming. Cut flowers in early morning with sharp scissors when blooms are freshly opened. Remove flowers as soon as they fade to redirect energy to new blooms. For tuber digging: Wait until first frost kills foliage, then carefully dig up tubers, clean gently, dry in airy location for 2-3 weeks, then store in cool, dry environment until spring.
Fun Facts
- 🌱 Dahlias are native to Mexico and were revered by the Aztecs as a food source and spiritual symbol before being introduced to Europe in the 16th century.
- 🌱 The Lilliput and Mignon classifications indicate both exceptional dwarfism and abundance of small flowers—some plants can produce 50+ blooms simultaneously.
- 🌱 Dahlias have remarkable diversity, with over 42,000 registered cultivars in colors spanning nearly every hue except true blue, all descended from just a few original wild species.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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