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#1
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Fungal Problems
We have a North/South aligned path running from our front door along the
side of the house to the garage, it is shaded on both sides and the Northern end so it gets very little sunlight. The Orange Jessamines are doing fantastically but everything else seems to be covered in a white fluffy fungus. The roses are especially affected, I know its too dark for them really but we would like them to stay. The Gardenias are also affected, however the very sick gardenias are the ones closest to a rendered brick wall, which actually acts as a retaining wall for about 40 cm of next doors land. I was wondering perhaps if excessive lime was leaching out of the wall and into the soil. The Gardenias also have a brown sooty coating, plus what I think is scale, and occasionally those little marshmallow white things. Can any one help? We are in Perth. Tristan |
#2
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Fungal Problems
The "marshmallow white things" are almost certainly mealy bug. Blast them
off with your hose, paying particular attention at all joints. If that fails, spray with white oil, which will probably do the job on the gardenias too. You might also consider cutting back on watering for a while. "Tristan" wrote in message .. . We have a North/South aligned path running from our front door along the side of the house to the garage, it is shaded on both sides and the Northern end so it gets very little sunlight. The Orange Jessamines are doing fantastically but everything else seems to be covered in a white fluffy fungus. The roses are especially affected, I know its too dark for them really but we would like them to stay. The Gardenias are also affected, however the very sick gardenias are the ones closest to a rendered brick wall, which actually acts as a retaining wall for about 40 cm of next doors land. I was wondering perhaps if excessive lime was leaching out of the wall and into the soil. The Gardenias also have a brown sooty coating, plus what I think is scale, and occasionally those little marshmallow white things. Can any one help? We are in Perth. Tristan |
#3
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Fungal Problems
Tristan wrote:
We have a North/South aligned path running from our front door along the side of the house to the garage, it is shaded on both sides and the Northern end so it gets very little sunlight. The Orange Jessamines are doing fantastically but everything else seems to be covered in a white fluffy fungus. The roses are especially affected, I know its too dark for them really but we would like them to stay. The Gardenias are also affected, however the very sick gardenias are the ones closest to a rendered brick wall, which actually acts as a retaining wall for about 40 cm of next doors land. I was wondering perhaps if excessive lime was leaching out of the wall and into the soil. The Gardenias also have a brown sooty coating, plus what I think is scale, and occasionally those little marshmallow white things. Can any one help? We are in Perth. Tristan Get a pH test kit from a garden centre to test the soil. Add sulphur if it is too limey. Is the fungus like a powdery layer on the leaves, or like bits of fluff stuck to stems and under leaves? If it's the latter, it's from the mealybug. If white oil doesn't work, try methylated spirits. If there is lots of fluff around be prepared to do followup sprays regularly, or drench the soil with malathion, as they lay eggs underground. If it's powdery mildew, then you could spray with wettable sulphur. This is a good time of year for that. Follow the instructions as you can burn the plants. Someone suggested Bordeaux mixture a while back, and someone else suggested milk, so you could try them. White oil will also treat scale and sooty mould. Check for ants, too. Jane |
#4
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Fungal Problems
Tristan wrote:
We have a North/South aligned path running from our front door along the side of the house to the garage, it is shaded on both sides and the Northern end so it gets very little sunlight. The Orange Jessamines are doing fantastically but everything else seems to be covered in a white fluffy fungus. The roses are especially affected, I know its too dark for them really but we would like them to stay. The Gardenias are also affected, however the very sick gardenias are the ones closest to a rendered brick wall, which actually acts as a retaining wall for about 40 cm of next doors land. I was wondering perhaps if excessive lime was leaching out of the wall and into the soil. The Gardenias also have a brown sooty coating, plus what I think is scale, and occasionally those little marshmallow white things. Can any one help? We are in Perth. Tristan Get a pH test kit from a garden centre to test the soil. Add sulphur if it is too limey. Is the fungus like a powdery layer on the leaves, or like bits of fluff stuck to stems and under leaves? If it's the latter, it's from the mealybug. If white oil doesn't work, try methylated spirits. If there is lots of fluff around be prepared to do followup sprays regularly, or drench the soil with malathion, as they lay eggs underground. If it's powdery mildew, then you could spray with wettable sulphur. This is a good time of year for that. Follow the instructions as you can burn the plants. Someone suggested Bordeaux mixture a while back, and someone else suggested milk, so you could try them. White oil will also treat scale and sooty mould. Check for ants, too. Jane |
#5
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Fungal Problems
Tristan wrote:
We have a North/South aligned path running from our front door along the side of the house to the garage, it is shaded on both sides and the Northern end so it gets very little sunlight. The Orange Jessamines are doing fantastically but everything else seems to be covered in a white fluffy fungus. The roses are especially affected, I know its too dark for them really but we would like them to stay. The Gardenias are also affected, however the very sick gardenias are the ones closest to a rendered brick wall, which actually acts as a retaining wall for about 40 cm of next doors land. I was wondering perhaps if excessive lime was leaching out of the wall and into the soil. The Gardenias also have a brown sooty coating, plus what I think is scale, and occasionally those little marshmallow white things. Can any one help? We are in Perth. Tristan Get a pH test kit from a garden centre to test the soil. Add sulphur if it is too limey. Is the fungus like a powdery layer on the leaves, or like bits of fluff stuck to stems and under leaves? If it's the latter, it's from the mealybug. If white oil doesn't work, try methylated spirits. If there is lots of fluff around be prepared to do followup sprays regularly, or drench the soil with malathion, as they lay eggs underground. If it's powdery mildew, then you could spray with wettable sulphur. This is a good time of year for that. Follow the instructions as you can burn the plants. Someone suggested Bordeaux mixture a while back, and someone else suggested milk, so you could try them. White oil will also treat scale and sooty mould. Check for ants, too. Jane |
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