DARWIN PERENNIALS FINISHING GUIDE
LIGHT LEVELS
SERIES/ VARIETY
MEDIA PH
VERNALIZATION REQUIRED
PAGE CROP
TEMPERATURE DAYLENGTH
WATERING FERTILIZATION
IN FOOT- CANDLES
3,000 to 5,000
Low to moderate Use a balanced
Mountain Frost™ White Twinkle
5.8-6.2 45 to 60°F (7 to 16°C)
Day length neutral
Beneficial for an increased quantity of Spring blooms.
24-25 DIANTHUS
fertilizer at a rate of 125 to 150 ppm N. Use a balanced fertilizer at a rate of 125 to 150 ppm.
Dianthus hybrida DIGITALIS Digitalis hybrida
Long day facultative
No
3,000 to 5,000
Allow media to dry moderately
Arctic Fox™ Series
5.8-6.2 Nights: 55 to 60°F (13 to 16°C) Days: 60 to 65°F (16 to 18°C) 5.8-6.2 Nights: 55 to 60°F (13 to 16°C) Days: 60 to 65°F (16 to 18°C)
26
between watering.
Use a balanced fertilizer at a rate of 125 to 150 ppm.
Long day obligate
No
3,500 to 5,000
Allow media to dry moderately
Double Scoop™ Series
ECHINACEA Echinacea x hybrida
between watering.
28
Sombrero Poco™ Series
5.8-6.2 60 to 68°F (16 to 20°C)
Long day obligate
No
5,000 to 8,000
Moderate
Use a balanced fertilizer at a rate of 150 to 175 ppm N. Use a balanced fertilizer at a rate of 150 to 175 ppm N.
29 ECHINACEA
Echinacea x hybrida ECHINACEA Echinacea x hybrida
Sombrero ® Series
5.8-6.2 60 to 68°F (16 to 20°C)
Long day obligate
No
5,000 to 8,000
Moderate
30-31
Brightside™
5.8-6.2 50 to 60°F (10 to 16°C)
Day length neutral
Yes
3,000 to 5,000
Low to moderate 150 to 175 ppm N.
32 ERYSIMUM
Erysimum linifolium EUPATORIUM Eupatorium dubium
Use a balanced fertilizer at a rate of 125 to 150 ppm.
Long day obligate
No
5,000 to 8,000
Allow media to dry moderately between watering. Prefers moist soils. Allow media to dry moderately
'Little Joe'
5.8-6.2 Nights: 55 to 65°F (13 to 18°C) Days: 65 to 75°F (18 to 24°C) 5.8-6.2 Nights: 55 to 60°F (13 to 16°C) Days: 60 to 65°F (16 to 18°C)
33
Use a balanced fertilizer at a rate of 150 to 175 ppm. Use a balanced fertilizer at a rate of 125 to 150 ppm.
Long day obligate
No
5,000 to 8,000
Euphoria™ Series
EUPATORIUM Eupatorium purpureum GAILLARDIA Gaillardia aristata
33
between watering.
No
3,000 to 5,000
Allow media to dry moderately
Guapa Series 5.8-6.2 Nights: 55 to 60°F (13 to 16°C) Days: 60 to 65°F (16 to 18°C) Purple Glow 6.2-6.4 Nights: 55 to 65°F (13 to 17°C) Days: 60 to 80°F (15 to 27°C)
34
between watering.
Use a balanced fertilizer at a rate of 125 to 150 ppm.
Day length neutral
Yes, beneficial for flowering
5,000 to 8,000
Allow media to dry slightly
GERANIUM Geranium sanguineum
between watering.
34
'Autumn Gold'
5.8-6.2 55 to 70°F (13 to 21°C)
Short day obligate
No
5,000 to 8,000
Low to moderate Use a balanced fertilizer at a rate of 150 ppm N.
HELIANTHUS Helianthus salicifolius
36
Long day obligate
No
5,000 to 8,000
Moderate
Use a balanced fertilizer at a rate of 150 to 175 ppm N. Use a balanced fertilizer at a rate of 150 to 175 ppm. Use a balanced fertilizer at a rate of 100 to 125 ppm. Use a balanced fertilizer at a rate of 125 to 150 ppm N. fertilizer at a rate of 150 to 175 ppm N. Use a balanced fertilizer at a rate of 150 to 175 ppm
Summer Eclipse 5.8-6.2 Nights: 56 to 64°F (13 to 18°C) Days: 65 to 76°F (18 to 24°C)
HELIOPSIS Heliopsis helianthoides
36
Long day obligate
Beneficial; aids in bulking.
5,000 to 8,000
Allow media to dry slightly
'Sunstruck'
5.8-6.2 Nights: 55 to 65°F (13 to 18°C) Days: 65 to 75°F (18 to 24°C) 5.8-6.2 Nights: 50 to 55°F (10 to 13°C) Days: 60 to 65°F (16 to 18°C)
HELIOPSIS Heliopsis helianthoides
36
between watering.
Day length neutral
No
1,500 to 2,500
Allow media to dry slightly
Carnival Series
HEUCHERA Heuchera x hybrida
37
between watering. Moderate
Day length neutral
No
1,500 to 2,500
Big Top Series 5.8-6.2 Nights: 55 to 65°F (13 to 18°C) Days: 65 to 75°F (18 to 24°C)
HEUCHERA Heuchera x villosa
38
'Snowsation'
5.8-6.2 45 to 60°F (7 to 16°C)
Day length neutral
Yes
3,000 to 5,000
Low to moderate Use a balanced
39 IBERIS
Iberis sempervirens KNIPHOFIA Kniphofia uvaria
Glowstick
5.8-6.2 68 to 72°F (20 to 22°C)
Long day obligate
No
5,000 to 8,000
Allow media to dry slightly between watering. Overwatering will result in slow bulk.
40
N. Generally a heavier feeder.
Product information and culture charts at darwinperennials.com
86 | FINISHING GUIDE
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