Flowers of the Okanagan

Kelowna Flower Gardens

Kelowna’s Flower Garden Club

Root Care

Planting generally takes place in the spring, soon after the last frost. Sowing depth and spacing entirely depends on plant and design type. We will get into depth once the first key points are established.

Planting Roses

1. Sites:
Roses require full exposure to sun, throughout the day. A mininum of six hours, will be satisfactory, where morning sun is crutial. -Air movement flows wihtin the foliage keeps them dyr, reducings mildew and disease. -

2. Drainage
Add several cm's of volcanic cinder or gravel about 30 cm depth below the garden soil. Allow for water to drain into this, and then into a prepared trench with a drain pipe that has roofing paper over it to create strucural integrity, and so that the soil doesn't wash away. The pipe should be at a low laying angle, less than 15 degree slope.

3. Raising the Beds
In moist conditions, build up the soil 25-40 cms and place outer framing of stone, wood, or brick.

4. Erosion
Consider where erosion may occur on steeply dipping slopes, and anything thats more the 20 degrees, build a terrace that will prevent slumping.

5. Ranges of Soils
Roses do well in high hummus soils, as well as loam. The ideal recipe for growing is: 50 cms depth of; 5 parts (by volume) of loam, 4 parts organic matter (composte, manure, peat moss, shredds of bark), 1 part builders sand.

6. Acidity
Slightly acidic soils best suit roses at 6.0 - 6.5 pH. Adding agricultural sulfur may help in alkaline soils.

Elements Contributions Signs of Malnutrition
Primary Elements
Nitrogen
Promotes growth of stems, leavesYellow Leaves, No new growth, bud failures, pale flowers
PhosphorusStrong root growth, and flowersDull foliage, falling leaves, weak stems, damaged roots, slow-to-open buds
PotassiumVigorous growthYellow leaf margins, turning brown, weak stems, underdevelopped buds
Secondary Elements
Calcium
Growth of plant cells and strong rootsDeformed growth, damaged roots
MagnesiumGood growthMature yellow leaves
SulfurGreen growthYellowing of new leaves
Trace Elements
Boron
Good formSmall, curled or scortched leaves, dead terminal buds
ChlorineGood growthFoliage damaged
CopperGood growthPoorly developed tips
IronKeeps plants greenYellow foliage
MagnesiumIncreases nitrogenPale mottling of leaves
MolybdenumGood growthPoorly developed leaves
ZincGood growthDeformed growth

Systemic Root Care

Spread the recommended amount of granules around the bush and work it into the soil. The nutrients and insecticides are dispersed systemically throughout the entire plant. The new growth will be protected against sucking insects as it develops.

Rose Plant Watering

PVC pipe can be laid troughout the rose bushes, dispensing water right near the stem. Best practise is to dig small basins about 5 cm in depth, 10 cm in width, that fill with water. Roses can't get too much water, but they will not tolerate wet feet! Therefore, drainage must be excellent.

Mulch

Material Comments
BarkChip or fine ground, long-lasting
BuckwheatAttractive, but scatters in windy conditions
Cotton screenings, peanut hulls, shredded stemsDurable, improves soils structure, Obtainable from processing plants, or mills
Grass clippings, strawMost available, Dry out before spreading, repeat use to build up reservoir of minerals that lasts years
Gravel or stone chipsNot attractive with roses, extremely durable, holds down weeds, does not supply plant nutrients or humus
Ground corn cobsExcellent for improving soil structure
Mushroom ComposteAvailable where commercial mushrooms are produced, blends into landscape
NewspaperReadily available, shredded or in sheets, hold in place with rocks, bricks or soil. Cover with more attractive material, builds humus.
Peat mossAttractive, availble at expense. Compacts and sheds rain water, should be kept moist at all times.
Pecan hullsExtremely durable, limited availability
Rotted manureMay contain weed seeds
Sawdust, woodchips, or shavingsLow in plant nutrients, decomposes slowly, element correction required if yellowing, add nitrogen.
LeavesExcellent source of humus, high in nutrients.

Rose