Darwin Perennials 2025 catalog

DARWIN PERENNIALS FINISHING GUIDE

LIGHT LEVELS

SERIES/ VARIETY

MEDIA PH

VERNALIZATION REQUIRED

PAGE CROP

TEMPERATURE DAYLENGTH

WATERING

FERTILIZATION

IN FOOT- CANDLES

Moon Dust

5.8-6.2 Nights: 55 to

Long day facultative

No

5,000 to 8,000

Allow media to dry regularly

Use a balanced fertilizer at a rate of 125 to 150 ppm.

ACHILLEA Achillea hybrida

65°F (13 to 18°C) Days: 60 to 65°F (16 to 18°C) 65°F (13 to 18°C) Days: 65 to 75°F (18 to 24°C) 65°F (13 to 18°C) Days: 60 to 65°F (16 to 18°C) 55°F (10 to 13°C) Days: 60 to 65°F (16 to 18°C) 55°F (10 to 13°C) Days: 60 to 65°F (16 to 18°C)

20

between watering. Moderate

Milly Rock™ Series

5.8-6.2 Nights: 55 to

Long day facultative

No

2,500 to 4,500

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.

ACHILLEA Achillea millefolium ACHILLEA Achillea millefolium AGASTACHE Agastache rugosa AGASTACHE MEXICANA Agastache mexicana ALYSSUM Alyssum wulfenianum

18

New Vintage™ Series

5.8-6.2 Nights: 55 to

Long day facultative

No

5,000 to 8,000

Allow media to dry regularly

16

between watering.

'Little Adder'

5.8-6.2 Nights: 50 to

Long day facultative

No

3,000 to 5,000

Allow media to dry regularly

22

between watering.

Summerlong™ Series

5.8-6.2 Nights: 50 to

Long day facultative

No

3,000 to 5,000

Allow media to dry regularly

21

between watering.

'Golden Spring'

5.8-6.2 Nights: 55 to

Day length neutral

Yes

5,000 to 8,000

Allow media to dry slightly

Use a balanced fertilizer at a rate of 125 to 150 ppm.

65°F (13 to 18°C) Days: 60 to 65°F (16 to 18°C)

26

between watering. Moderate

Dreameria ® Series

5.8-6.2 Nights: 55°F (13°C)

Day length neutral

No

3,000 to 5,000

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 150 to 175 ppm N.

ARMERIA Armeria pseudarmeria

27

Days: 68°F (20°C)

SunFern™ Arcadia

5.8-6.2 Nights: 56 to

Day length neutral

No

5,000 to 8,000

Allow media to dry moderately

ARTEMISIA Artemisia gmelinii ARTEMISIA Artemisia gmelinii

64°F (13 to 18°C) Days: 65 to 76°F (18 to 24°C) 64°F (13 to 18°C) Days: 65 to 76°F (18 to 24°C) 55°F (10 to 13°C) Days: 60 to 65°F (16 to 18°C)

29

between watering.

SunFern™ Olympia

5.8-6.2 Nights: 56 to

Day length neutral

No

5,000 to 8,000

Allow media to dry moderately

29

between watering.

1,500 to 2,500

Allow media to dry slightly

'Frostbite'

5.8-6.2 Nights: 50 to

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.

Use a balanced fertilizer at a rate of 100 to 125 ppm.

BRUNNERA Brunnera macrophylla

30

between watering.

1,500 to 2,500

Allow media to dry slightly

Frostline

5.8-6.2 Nights: 50 to

Day length neutral

Use a balanced fertilizer at a rate of 100 to 125 ppm.

BRUNNERA Brunnera macrophylla

55°F (10 to 13°C) Days: 60 to 65°F (16 to 18°C)

30

between watering.

1,500 to 2,500

Allow media to dry slightly

Permafrost

5.8-6.2 Nights: 50 to

Day length neutral

Use a balanced fertilizer at a rate of 100 to 125 ppm.

BRUNNERA Brunnera macrophylla

55°F (10 to 13°C) Days: 60 to 65°F (16 to 18°C)

30

between watering. Moderate

Chrysalis™ Series

5.8-6.2 Nights: 56 to

Long day facultative

No

5,000 to 8,000

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.

BUDDLEIA Buddleia hybrid CARYOPTERIS Caryopteris x clandonensis CARYOPTERIS Caryopteris x clandonensis CARYOPTERIS Caryopteris x clandonensis CENTAUREA Centaurea ragusina

64°F (13 to 18°C) Days: 65 to 76°F (18 to 24°C) 65°F (13 to 18°C) Days: 65 to 75°F (18 to 24°C)

31

'Emerald Crest'

5.8-6.2 Nights: 55 to

Long day obligate

No

5,000 to 8,000

Allow media to dry regularly

35

between watering.

'Gold Crest'

5.8-6.2 Nights: 55 to

Long day obligate

No

5,000 to 8,000

Allow media to dry regularly

Use a balanced fertilizer at a rate of 125 to 150 ppm.

65°F (13 to 18°C) Days: 65 to 75°F (18 to 24°C)

35

between watering.

Grand Bleu ®

5.8-6.2 Nights: 55 to

Long day obligate

No

5,000 to 8,000

Allow media to dry regularly

Use a balanced fertilizer at a rate of 125 to 150 ppm.

65°F (13 to 18°C) Days: 65 to 75°F (18 to 24°C)

35

between watering.

Silver Swirl

5.8-6.2 Nights: 56 to

No

5,000 to 8,000

Allow media to dry moderately

Use a balanced fertilizer at a rate of 150 to 175 ppm N.

64°F (13 to 18°C) Days: 65 to 76°F (18 to 24°C)

34

between watering.

Day length neutral

No

5,000 to 8,000

Allow media to dry moderately

'Golden Stardust'

5.8-6.2 Nights: 55 to

Use a balanced fertilizer at a rate of 125 to 150 ppm.

COREOPSIS Coreopsis hybrida

70°F (13 to 21°C) Days: 60 to 80°F (15 to 27°C)

between watering.

36

Day length neutral

No

5,000 to 8,000

Allow media to dry moderately

'Super Star'

5.8-6.2 Nights: 55 to

Use a balanced fertilizer at a rate of 125 to 150 ppm.

COREOPSIS Coreopsis hybrida

65°F (13 to 17°C) Days: 60 to 80°F (15 to 27°C)

between watering.

36

Product information and culture charts at darwinperennials.com

152 | FINISHING GUIDE

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