DARWIN PERENNIALS FINISHING GUIDE
LIGHT LEVELS IN FOOT- CANDLES
SERIES/ VARIETY
MEDIA PH
VERNALIZATION REQUIRED
WATERING
FERTILIZATION
PAGE CROP
TEMPERATURE DAYLENGTH
Long day facultative
No
2,500 to 4,500
Moderate
Use a balanced fertilizer at a rate of 150 to 175 ppm N. Use a balanced fertilizer at a rate of 125 to 150 ppm. Use a balanced fertilizer at a rate of 125 to 150 ppm. Use a balanced fertilizer at a rate of 125 to 150 ppm. Use a balanced fertilizer at a rate of 125 to 150 ppm. 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. Use a balanced fertilizer at a rate of 100 to 125 ppm. Use a balanced fertilizer at a rate of 100 to 125 ppm. Use a balanced fertilizer at a rate of 100 to 125 ppm. Use a balanced fertilizer at a rate of 100 to 125 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. Use a balanced fertilizer at a rate of 125 to 150 ppm. Use a balanced fertilizer at a rate of 125 to 150 ppm. Use a balanced fertilizer at a rate of 125 to 150 ppm.
Milly Rock™ Series
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 65°F (13 to 18°C) Days: 60 to 65°F (16 to 18°C) 5.8-6.2 Nights: 50 to 55°F (10 to 13°C) Days: 60 to 65°F (16 to 18°C) 5.8-6.2 Nights: 50 to 55°F (10 to 13°C) Days: 60 to 65°F (16 to 18°C) 5.8-6.2 Nights: 55 to 65°F (13 to 18°C) Days: 60 to 65°F (16 to 18°C) 5.8-6.2 Nights: 55°F (13°C) Days: 68°F (20°C) 5.8-6.2 Nights: 56 to 64°F (13 to 18°C) Days: 65 to 76°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) 5.8-6.2 Nights: 50 to 55°F (10 to 13°C) Days: 60 to 65°F (16 to 18°C) 5.8-6.2 Nights: 50 to 55°F (10 to 13°C) Days: 60 to 65°F (16 to 18°C) 5.8-6.2 Nights: 50 to 55°F (10 to 13°C) Days: 60 to 65°F (16 to 18°C) 5.8-6.2 Nights: 50 to 55°F (10 to 13°C) Days: 60 to 65°F (16 to 18°C) 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 65°F (13 to 18°C) Days: 65 to 75°F (18 to 24°C) 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 65°F (13 to 17°C) Days: 60 to 80°F (15 to 27°C)
ACHILLEA Achillea millefolium
16
New Vintage™ Series
Long day facultative
No
5,000 to 8,000
Allow media to dry regularly between watering. Allow media to dry regularly between watering. Allow media to dry regularly between watering. Allow media to dry slightly between watering.
ACHILLEA Achillea millefolium
15
Summerlong™ Series
Long day facultative
No
3,000 to 5,000
AGASTACHE Agastache mexicana
18
'Little Adder'
Long day facultative
No
3,000 to 5,000
AGASTACHE Agastache rugosa
18
'Golden Spring'
Day length neutral
Yes
5,000 to 8,000
ALYSSUM Alyssum wulfenianum
19
Dreameria ® Series
Day length neutral
No
3,000 to 5,000
Moderate
ARMERIA Armeria pseudarmeria
17
SunFern™ Olympia
Day length neutral
No
5,000 to 8,000
Allow media to dry moderately between watering. Allow media to dry slightly between watering. Allow media to dry slightly between watering. Allow media to dry slightly between watering. Allow media to dry slightly between watering. Allow media to dry slightly between watering. Allow media to dry regularly between watering. Allow media to dry regularly between watering. Allow media to dry regularly between watering. Allow media to dry moderately between watering.
ARTEMISIA Artemisia gmelinii
19
1,500 to 2,500
Frost King
Day length neutral
Yes, required for flowering; however, plants sell as foliage. Yes, required for flowering; however, plants sell as foliage. Yes, required for flowering; however, plants sell as foliage. Yes, required for flowering; however, plants sell as foliage. Yes, required for flowering; however, plants sell as foliage.
BRUNNERA Brunnera macrophylla
20
1,500 to 2,500
Frost Magic
Day length neutral
BRUNNERA Brunnera macrophylla
20
1,500 to 2,500
'Frostbite'
Day length neutral
BRUNNERA Brunnera macrophylla
20
1,500 to 2,500
Frostline
Day length neutral
BRUNNERA Brunnera macrophylla
20
1,500 to 2,500
Permafrost
Day length neutral
BRUNNERA Brunnera macrophylla
20
'Emerald Crest'
Long day obligate
No
5,000 to 8,000
CARYOPTERIS Caryopteris x clandonensis CARYOPTERIS Caryopteris x clandonensis CARYOPTERIS Caryopteris x clandonensis COREOPSIS Coreopsis hybrida
21
'Gold Crest'
Long day obligate
No
5,000 to 8,000
21
Grand Bleu ®
Long day obligate
No
5,000 to 8,000
21
Day length neutral
No
5,000 to 8,000
Sunfetti Series
21
Use a balanced fertilizer at a rate of 125 to 150 ppm.
Day length neutral
No
5,000 to 8,000
Allow media to dry moderately between watering.
UpTick™ Series 5.8-6.2 Nights: 55 to 65°F (13 to 17°C) Days: 60 to 80°F (15 to 27°C)
COREOPSIS Coreopsis hybrida
22
Day length neutral
No
5,000 to 8,000
Low to moderate
Use a balanced fertilizer at a rate of 150 to 175 ppm N. Use a balanced fertilizer at a rate of 125 to 150 ppm N.
Ocean Sunset™ Series
5.8-6.2 Nights: 56 to 64°F (13 to 18°C) Days: 65 to 76°F (18 to 24°C)
DELOSPERMA Delosperma hybrida
23
Mountain Frost™ Pink Carpet, Pink PomPom,
3,000 to 5,000
Low to moderate
5.8-6.2 45 to 60°F (7 to 16°C) Day length neutral
Beneficial for an increased quantity of Spring blooms.
DIANTHUS Dianthus hybrida
24
Pink Twinkle, Red Garnet, Ruby Glitter, Ruby Snow
3,000 to 5,000
Low to moderate
Use a balanced fertilizer at a rate of 125 to 150 ppm N. Use a balanced fertilizer at a rate of 125 to 150 ppm N. Use a balanced fertilizer at a rate of 125 to 150 ppm N. Use a balanced fertilizer at a rate of 125 to 150 ppm.
Mountain Frost™ Rose Bouquet
5.8-6.2 45 to 60°F (7 to 16°C) Day length neutral
Beneficial for an increased quantity of Spring blooms. Beneficial for an increased quantity of Spring blooms. Beneficial for an increased quantity of Spring blooms.
DIANTHUS Dianthus hybrida DIANTHUS Dianthus hybrida DIANTHUS Dianthus hybrida DIGITALIS Digitalis hybrida
24
3,000 to 5,000
Low to moderate
Mountain Frost™ Silver Strike
5.8-6.2 45 to 60°F (7 to 16°C) Day length neutral
24
3,000 to 5,000
Low to moderate
Mountain Frost™ White Twinkle
5.8-6.2 45 to 60°F (7 to 16°C) Day length neutral
24
Long day facultative
No
3,000 to 5,000
Allow media to dry moderately between watering.
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)
25
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