White shrub rose - Inland Valley Garden Planner

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White shrub rose — Rosa floribunda 'Iceberg'

White shrub rose — Rosa floribunda 'Brilliant Pink Iceberg'

Description

Floribunda roses are robust semi-evergreen climbing shrubs with an upright growth habit that can reach 8-10 ft. tall and 5-6 ft. wide. Flexible stems have many thorns; pinnately divided leaves are bright green. Double flowers with a touch of pink grow in large sprays beginning in spring and will repeat several times throughout summer and fall.

Iceberg rose belongs to the floribunda group and is arguably the most popular rose for commercial and residential landscapes and garden plantings in the Inland Empire. They are highly resistant to diseases and are widely grown in mass plantings, along borders, in containers and in focal areas. Climbing forms can be trained on columns and espaliered along walls. Plant in rich soils with good drainage, sunny exposures and provide regular water. Heaviest pruning and fertilizing should be done in the winter to maintain desired sizes and encourage better flowering during spring. A pink flowering cultivar known as R. f. 'Brilliant Pink Iceberg' grows as a 3-5 ft. tall shrub and produces colorful displays of pink flowers with white markings. This cultivar produces deeper flower color in areas with cooler summer temperatures.

Water Needs

Floribunda roses are well adapted to sunny locations and regular moisture throughout the year. The chart shown below provides a recommended baseline guide to the monthly irrigation schedule and volume of supplemental water needed to maintain healthy growth throughout the average year. It should be noted there are several months indicated by an asterisk (*) when winter rains can provide sufficient moisture and irrigation is not needed. The high and low range of moisture indicates it can grow with varying amounts of water, however, this cultivar does best within the higher moisture range to achieve the best flowering performance throughout the summer months.

Irrigation Schedule and Graph

Moderate Water Use Plants

Irrigation Schedule 4

	Jan*	Feb*	Mar*	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov*	Dec*
Runs per Month	0x to 3x	0x to 3x	0x to 3x	2x to 3x	2x to 3x	3x to 4x	3x to 4x	3x to 4x	2x to 3x	2x to 3x	0x to 3x	0x to 3x
Inches per Run	1"	1"	1"	1"	1"	1"	1"	1"	1"	1"	1"	1"

Inches per Month	0" to 3"	0" to 3"	0" to 3"	2" to 3"	2" to 3"	3" to 4"	3" to 4"	3" to 4"	2" to 3"	2" to 3"	0" to 3"	0" to 3"

Range of supplemental summer water: 17"-24"
Range of supplemental winter water: 0"-15"

0"-3"

2"-3"

3"-4"

2"-3"

0"-3"

Jan*

Feb*

Mar*

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov*

Dec*

For more information on how to use this Irrigation Schedule and Graph, follow this link.

For information how to calculate your irrigation system’s schedule and precipitation rate, please follow this link.

Plant Properties

Plant Type: Shrub
Foliage Character: Semi-deciduous
Habit: Upright, Sprawling, Robust, Mounding, Climbing
Growth Rate: Moderate
Height: 8 ft. - 10 ft.
Width: 5 ft. - 6 ft.
Water Needs: Moderate 4
Foliage Color: Medium green
Flower Color: White
Flower Season: Summer, Spring, Fall
Soil Adaptations: Loam
Exposure Adaptations: Heat, All day sun
Function: Residential spaces, Mass planting, Foundations, Flowering accent plant, Espalier, Commercial spaces, Civic spaces, Borders, Hedge

Maintenance

Prune in fall or winter when dormant. Remove any damaged wood. Remove any crossing branches by selecting the one you want to keep and pruning out the other. Make pruning cuts about 1/4 inch above a bud location or "node." Emerging stems and branches will grow in the direction of the bud, so cut just above a bud location pointed in the direction you want it to grow. Buds should be selected to grow in an outward facing direction for good form an air circulation once they grow. Also prune for desired size, cutting back harder (still above outward facing bud locations) if you want a smaller plant. Entire branches or stems can also be removed, all the way back to the larger branch they emerge from, instead of a bud, to open up the plant more and increase air circulation if the branches seem too dense and cluttered (S).

References