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How to Care for a New Zealand Tea Rose
How to Care for a New Zealand Tea Rose. New Zealand is a tea rose that was hybridized in New Zealand in 1989. When grown in U.S. Department of Agriculture Plant Hardiness zones 7a to 11, New Zealand produces double, light-pink flowers that are highly fragrant. An easy rose to grow, New Zealand is resistant to several common rose diseases and pests.
New Zealand is a tea rose that was hybridized in New Zealand in 1989. When grown in U.S. Department of Agriculture Plant Hardiness zones 7a to 11, New Zealand produces double, light-pink flowers that are highly fragrant. An easy rose to grow, New Zealand is resistant to several common rose diseases and pests.
Things You'll Need
Mulch
Soaker hose
Fertilizer
Insecticidal soap
Pruning shears
Spread a 3-inch layer of mulch on the soil around the New Zealand rose. Keep the mulch 6 inches away from the bush and spread it 1 foot beyond the widest part of it. Rake the mulch back in early spring, bag it and discard it before laying down a fresh layer.
Water the rose slowly and deeply so that the soil is wet to a depth of 18 inches. To avoid getting water on the foliage, use a soaker hose to deliver the water.
Fertilize the New Zealand rose with a high-nitrogen rose food, such as 15-5-15, in early spring. When the buds are forming, switch to a rose food that is high in phosphorous, such as 5-7-2 or 5-10-5. Apply the rose food again when the buds are fully formed and once more two months before your first frost. Use the rate suggested on the label and water the soil before you fertilize.
Watch for signs of insects and disease. Although the New Zealand hybrid tea rose is resistant to some of the most common problems such as black spot, mildew and rust, insects like aphids and spider mites may still attack it. Manage these nuisances with an insecticidal soap sprayed directly on the pests.
Prune the New Zealand rose in early spring. Remove any dead wood, any branches that are crossing over others and any excessive growth in the interior of the bush. Cut off any shoots that are smaller in diameter than a pencil. To determine where to make the cuts, look closely at the branch you are cutting for small, swollen bumps. These are buds; make the cuts just above a bud that faces to the outside of the plant.
