Ahh I see that makes sense why they aren't connected up.
Have a read of the following for your pm issues, I'm sure you can also spray a weak solution of milk which combats pm just make sure you get the dosage correct so you don't do any damage...
Contrary to popular belief, powdery mildew generally does not require free water to establish and grow. Infection can actually occur on dry leaves. Warm temperatures and shady conditions encourage the fungus to grow and spread. However, the spores and mycelium are sensitive to extreme heat and direct sunlight.
The optimum temperature for infection is between 68 to 77 degrees F and relative humidity between 40 to 100% is sufficient for the spores to germinate. Low, diffuse light also seems to favor powdery mildew development. The mildew can spread rapidly since the disease cycle can be completed in as little as 72 hours. However, it commonly takes 7-10 days from the time of infection to the development of symptoms and secondary spore production.
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Plant in full sunlight in a well-drained area.
Do not crowd plants. Air flow and ventilation will discourage mildew growth.
Powdery mildew thrives where high rates of nitrogen have been used. High nitrogen promotes tender leaf formation, causing dense stands that are more susceptible to infections. Adequately fertilize but avoid stimulating succulent growth. Organic fertilizers or slow-release formulations of lawn fertilizers are good choices.
Prune infected plants to get rid of infected parts and increase airflow. If the infestations are severe, remove and destroy the plants that are infected.
Disinfect your pruning tool in a bleach solution of one part household bleach to four parts water after each cut.
Watering plants in the morning gives the plants the rest of the day to dry off, discouraging establishment of diseases, including powdery mildew.
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Organic Sprays
Sulfur is highly effective against powdery mildew if used in a protectant program with a minimum of 7 to 14 days between applications. Garlic naturally contains high levels of sulfur and a few cloves crushed in water can be used to make a homemade spray. Apply a sulfur-based fungicide at first evidence of mildew and repeat applications as necessary. Proper timing of fungicide applications is critical to successful control so make sure to begin at the first sign of the disease.
Another option is to spray once a week with a solution of baking soda. Baking soda increases the surface pH of the leaf making it unsuitable for the growth of powdery mildew spores. Be sure to spray the undersides of leaves as well as the upper surfaces when using any of these sprays.
Here's a recipe to make your own spray:
1 teaspoon baking soda
1 quart water
A few drops of liquid soap
Before treating your plants, test the spray on a few leaves to make sure they are not too sensitive.
There is a product on the market called "Serenade" which is OMRI certified organic and is effective
against PM and Botrytis.
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If needed during the growing season, begin fungicide applications when the first white patches are noticed. Repeat as indicated on the product label during cool humid weather. Some products with a broad range of applications for outdoor ornamentals include products containing: Bacillus Subtilis, Jojoba or
Neem oil, potassium bicarbonate, sulfur or lime sulfur. Some of these products may also be used to treat powdery mildew infections in the vegetable garden. Other products may also be available, so refer to the appropriate pest management guidelines or contact your local Cooperative Extension Office for more information.
Here is the article it came from, plenty of good advice for combating pm