Darwin Perennials 2025 catalog - Star Roses

DARWIN PERENNIALS FINISHING GUIDE

LIGHT LEVELS IN FOOT- CANDLES

SERIES/ VARIETY

MEDIA PH

VERNALIZATION REQUIRED

PAGE CROP

TEMPERATURE DAYLENGTH

WATERING

FERTILIZATION

Junior Walker™

5.8-6.2 Nights: 55 to

Long day facultative

No

5,000 to 8,000

Allow media to dry moderately

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

49

NEPETA Nepeta x faassenii NEPETA Nepeta x faassenii PENSTEMON Penstemon barbatus

70°F (13 to 21°C) Days: 60 to 80°F (15 to 27°C) 65°F (13 to 18°C) Days: 65 to 75°F (18 to 24°C) 70°F (13 to 21°C) Days: 60 to 80°F (15 to 27°C) 70°F (13 to 21°C) Days: 60 to 80°F (15 to 27°C) 65°F (13 to 18°C) Days: 60 to 65°F (16 to 18°C)

between watering. Moderate

Whispurr™ Series

5.8-6.2 Nights: 55 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 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 150 to 200 ppm N. Use a balanced fertilizer at a rate of 150 to 200 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.

48

Rock Candy ® Series

5.8-6.2 Nights: 55 to

Long day facultative

No

3,000 to 5,000

Allow media to dry moderately

51

between watering.

'Cherry Sparks'

5.8-6.2 Nights: 55 to

Long day facultative

No

3,000 to 5,000

Allow media to dry moderately

52

PENSTEMON Penstemon hybrida

between watering.

'CrazyBlue'

5.8-6.2 Nights: 55 to

Long day obligate

No

5,000 to 8,000

Allow media to dry slightly

53

PEROVSKIA Perovskia atriplicifolia

between watering. Moderate

Spring Splash™ Series

5.8-6.2 60 to 75°F (16 to 24°C)

5,000 to 8,000

58

PHLOX Phlox hybrida

Ka-Pow ® Series 5.8-6.2 60 to 75°F (16 to 24°C)

Long day obligate

No

5,000 to 8,000

Moderate

55

PHLOX Phlox paniculata PHLOX Phlox paniculata POLEMONIUM Polemonium pulcherrimum

Super Ka-Pow™ Series

5.8-6.2 Nights: 56 to

Long day obligate

No

5,000 to 8,000

Moderate

56

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)

'Golden Feathers'

5.8-6.2 Nights: 50 to

Long day obligate

Yes

1,500 to 2,500

Allow media to dry slightly

59

between watering.

Mirage™ Series 5.8-6.2 Nights: 55 to 70°F (13 to 21°C) Days: 60 to 80°F (15 to 27°C)

Day length neutral

No

3,000 to 5,000

Allow media to dry moderately

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

66-67 SALVIA

Salvia greggii

between watering.

'Radio Red'

5.8-6.2 Nights: 45 to

Day length neutral

No

5,000 to 8,000

Allow media to dry moderately

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

65

SALVIA Salvia greggii

70°F (7 to 21°C) Days: 55 to 80°F (13 to 27°C)

between watering.

5,000 to 8,000

Allow media to dry moderately

'Blue by You'

5.8-6.2 Nights: 45 to

Day length neutral

Beneficial; aids in bulking. Not required for flowering. Beneficial; aids in bulking. Not required for flowering. Beneficial; aids in bulking. Not required for flowering.

Use a balanced fertilizer at a rate of 150 to 200 ppm.

64

SALVIA Salvia hybrida

55°F (7 to 13°C) Days: 55 to 65°F (13 to 18°C)

between watering.

5,000 to 8,000

Allow media to dry moderately

Lyrical™ Series

5.8-6.2 Nights: 45 to

Day length neutral

Use a balanced fertilizer at a rate of 150 to 200 ppm.

63

SALVIA Salvia nemorosa

55°F (7 to 13°C) Days: 55 to 65°F (13 to 18°C)

between watering. Moderate

5,000 to 8,000

Use a balanced fertilizer at a rate of 175 to 200 ppm N.

Marvel Series

5.8-6.2 55 to 65°F (13 to 18°C)

Day length neutral

61-62 SALVIA

Salvia nemorosa

Shamrock

5.8-6.2 Nights: 55 to

No

5,000 to 8,000

Allow media to dry regularly

Use a balanced fertilizer at a rate of 125 to 150 ppm. Use a balanced fertilizer at a rate of 100 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 125 to 150 ppm. Use a balanced fertilizer at a rate of 125 to 150 ppm. Use a balanced Pansy/Viola fertilizer at a rate of 125 to 150 ppm.

70

SEDUM Sedum cauticola

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

between watering.

'Yellow Diamonds'

5.8-6.2 Nights: 55 to

Long day obligate

No

5,000 to 8,000

Allow media to dry slightly

68

SEDUM Sedum middendorffianum SEDUM Sedum rupestre SEDUM Sedum spurium STACHYS Stachys byzantina

between watering.

Prima Angelina 5.8-6.2 Nights: 55 to 70°F (13 to 21°C) Days: 60 to 80°F (15 to 27°C) What a Doozie 5.8-6.2 Nights: 55 to 70°F (13 to 21°C) Days: 60 to 80°F (15 to 27°C)

Long day obligate

No

5,000 to 8,000

Allow media to dry regularly

70

between watering.

Long day obligate

No

5,000 to 8,000

Allow media to dry regularly

69

between watering.

Little Lamb

5.8-6.2 Nights: 56 to

No

5,000 to 8,000

Allow media to dry moderately

71

64°F (13 to 18°C) Days: 65 to 76°F (18 to 24°C) 55°F (10 to 13°C) Days: 60 to 70°F (16 to 21°C) 55°F (10 to 13°C) Days: 60 to 70°F (16 to 20°C) 55°F (10 to 13°C) Days: 60 to 65°F (16 to 18°C)

between watering.

Skyward™ Series

5.8-6.2 Nights: 50 to

Long day facultative

No

5,000 to 8,000

Allow media to dry slightly

72

VERONICA Veronica hybrid

between watering.

Moody Blues ® Series

5.8-6.2 Nights: 50 to

Long day facultative

No

5,000 to 8,000

Allow media to dry slightly

73

VERONICA Veronica hybrida

between watering.

Halo Series

5.5-5.8 Nights: 50 to

Day length neutral

No

5,000 to 8,000

Allow media to dry slightly

74

VIOLA Viola cornuta

between watering.

Product information and culture charts at darwinperennials.com

80 | FINISHING GUIDE

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