Schedule Crop - Brunnera macrophylla Frostbite

Brunnera macrophylla Frostbite

Data is gathered from our West Grove, Pa., trials (Zone 6a). Southern growers: expect 1-2 weeks earlier finishing. Northern growers: 1 week slower. Consider summertime scheduling accurate. Dates based on a standard 72 liner size.

Notes/Pitfall Management
Requires overwintering for flowering. Does not require flowers for a very marketable container.

Week color desired

TC stick week

Liner transplant week

Early Spring

Gallon
(1 ppp)

Can fill out a 2G given more time.

Spring/Summer

Gallon
(1 ppp)

Provide partial shade for early summer finishing. Can fill out a 2G given more time.

Brunnera macrophylla Frostbite

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Propagation Guide
Media EC/pH:	EC 0.75-0.80 mmhos/pH 5.8-6.2
Soil Temperature:	68-72°F (21-22°C)
Rooting Hormone:	None
Mist:	Low mist or tenting
Fertilization:	Balanced fertilizer 75-100 ppm
Pinching:	None
Transplanting:	7-8 weeks
Comments:	This is a tissue culture raised item. Please see our detailed tissue culture propagation guide at darwinperennials.com. This item is generally a Summer propagated item. Excessive heat can cause losses.

Finishing Guide
Media pH:	5.8-6.2
Temperature:	Nights: 50 to 55°F (10 to 13°C) Days: 60 to 65°F (16 to 18°C)
Light Level (fc):	1,500 to 2,500
Vernalization:	Yes, required for flowering; however, plants sell as foliage.
Daylength:	Day length neutral
Watering:	Allow media to dry slightly between watering.
Fertilization:	Use a balanced fertilizer at a rate of 100 to 125 ppm.
Pinch After Transplant:	None
Plant Growth Regulators:	PGRs generally not needed
Pests and Fungal Diseases:	Pythium and rhizoctonia can result from overwatering.