Cup Flower 'White Robe'

Nierembergiahippomanica var. caerulea

Family
Solanaceae (so-lan-AY-see-ee)
Genus
Nierembergia (nee-rem-BERG-ee-uh)
Synonym
Nierembergia caerulea
Sun Exposure
Sun to Partial Shade
Foliage
Herbaceous
Smooth
Height
under 6 in. (15 cm)
6-12 in. (15-30 cm)
Spacing
12-15 in. (30-38 cm)
Hardiness
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
USDA Zone 11: above 4.5 °C (40 °F)
Bloom Color
Bright Yellow
White/Near White
Bloom Time
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Blooms all year
Blooms repeatedly
Other Details
Category
Annuals
Tropicals and Tender Perennials
Water Requirements
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Can be grown as an annual
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)
Patent Information
Propagation Methods
From herbaceous stem cuttings
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; direct sow after last frost
Seed Collecting
Collect seedhead/pod when flowers fade; allow to dry
Allow seedheads to dry on plants; remove and collect seeds
Properly cleaned, seed can be successfully stored
Regional

This plant is said to grow outdoors in the following regions:

Regina, Saskatchewan

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Gardener's Notes:

1
positive
0
neutral
0
negative
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Regina, SK (Zone 3b) | March 2016 | positive

"white robe" is a great little filler, very full, and literally smothered in thumbnail size profuse blooms. For me it has bloomed much mo...Read More

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