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Volunteer Growers Help - What can go WRONG -
No Germination> - POWDERY MILDEW - Collar-Rot> Moss> Ants> Slugs and Snails> Caterpillars or Grubs> Cutworms> Grasshoppers> Aphids> Birds> Possums> Cats> Uneven Growth> Weeds> I am not sure but things do not look right>
My Plants don't look right! What is that white stuff? Is that how our plants should look?
Solution to Powdery Mildew:-
This is a common problem, particularly for eucalypts. It will appear as a whitish or purple powdery substance on the leaves and stems, or brown spots on the leaves. It is generally a cooler-month problem, caused by too much moisture on the plant, particularly overnight. It is caused by watering you seedlings at night, when the temperature is not warm enough for the moisture to evaporate. It is also occurs if the seedlings are in too much shade, or if they have not been thinned, preventing air circulation around the individual seedlings.
To prevent powdery mildew, keep foliage dry in cool weather at night; ensure your seedlings are in full sun and make sure that you thin out your seedlings early enough.
To cure it, you can buy mildew products at your local garden shop – similar for products designed for roses. Lime Sulphate spray is a common product. Spray directly on to the affected areas, and ensure you follow directions carefully. You can also use a milk solution, mixing 1 part milk to 5 parts water and spray directly on to the affected areas.
Mildew will usually only set back a plant, rather than kill it; however you will need to act quickly, and remove and discard any very badly affected seedlings. It can be avoided if the plants are in the right position, watered at the right time and thinned out.
If you have any other problems, or have any questions about propagating you seedlings, please contact your area coordinator. Remember – be vigilant!
No Germination> - POWDERY MILDEW - Collar-Rot> Moss> Ants> Slugs and Snails> Caterpillars or Grubs> Cutworms> Grasshoppers> Aphids> Birds> Possums> Cats> Uneven Growth> Weeds> I am not sure but things do not look right>
My Plants don't look right! What is that white stuff? Is that how our plants should look?
Solution to Powdery Mildew:-
This is a common problem, particularly for eucalypts. It will appear as a whitish or purple powdery substance on the leaves and stems, or brown spots on the leaves. It is generally a cooler-month problem, caused by too much moisture on the plant, particularly overnight. It is caused by watering you seedlings at night, when the temperature is not warm enough for the moisture to evaporate. It is also occurs if the seedlings are in too much shade, or if they have not been thinned, preventing air circulation around the individual seedlings.
To prevent powdery mildew, keep foliage dry in cool weather at night; ensure your seedlings are in full sun and make sure that you thin out your seedlings early enough.
To cure it, you can buy mildew products at your local garden shop – similar for products designed for roses. Lime Sulphate spray is a common product. Spray directly on to the affected areas, and ensure you follow directions carefully. You can also use a milk solution, mixing 1 part milk to 5 parts water and spray directly on to the affected areas.
Mildew will usually only set back a plant, rather than kill it; however you will need to act quickly, and remove and discard any very badly affected seedlings. It can be avoided if the plants are in the right position, watered at the right time and thinned out.
If you have any other problems, or have any questions about propagating you seedlings, please contact your area coordinator. Remember – be vigilant!
<Back to Previous Page< >To Next Page>If you have any questions that are not answered, situations that are not covered or suggested photos to add, please contact the office ph (03) 9650 9477 or email info@treeproject.asn.au Modified August 2006