Cityline® - Bigleaf Hydrangea - Hydrangea macrophylla

pH:

B (5.6 - 6.2)

EC (2:1 Extraction Method):

B,C (0.6 - 2)

Fertilization:

Medium,High (150 - 300 ppm)

Light Requirements:

Medium

Water Categories:

Moderate to Moist

Rooting Out Temperature:

B (65 - 72º Fahrenheit)

Growing On Temperature:

A (60 - 65º Fahrenheit)

Holding Temperature:

A (40 - 50º Fahrenheit)

Planting and Timing Information:

Spring to Summer Finish, 1 ppp

Starting Materials:

Liners

Finishing Times:

6" and Gallon Pot : 2.25": 8-10 weeks; Quick Turn: 4-6 weeks

Finishing Times:

10-12" and Two Gallon Pot : 2.25": 12-16 weeks

Finishing Times:

18" and Three Gallon Pot : 2.25": 16-20 weeks; Quick Turn: 12-18 Weeks

Over Wintering Temperature:

35 to 50 degrees

Pinching and Growth Regulators:

B-9 is effective at controlling height and darkening foliage color, may be required on Berlin. Prune soon after potting will produce a finished product that doesn't open up when it flowers. The key is to make the first prune at the level of the first set of leaves closest to the soil.

Pest and Disease Management:

Aphids, Leaf Spot, Watch for Mildews

Grower Tips:

Tired of floppy, weak-stemmed hydrangeas? Cityline is the answer. Large flowers with vivid colors, strong stems and dark glossy foliage. H. macrophylla: Lower pH (5.0 to 5.5) will induce bluer flowers. Higher pH (6.0 to 7.0) will induce pinker flowers. Can be produced as a flowering greenhouse pot crop for Mother's Day.

Spring Outdoor Finish:

Vernalization:

Cold Required