Hello from near Minneapolis, Minnesota . Wondering if anyone with aster yellows experience could take a peek at my white woods aster. I am seeing leaf curling/yellowing on lots of aster and zig zag goldenrod and am worried about extent of possible infection. I am hoping to also deliver a sample to university, but it could take time. So many plants of aster family in my gardens hat the scale of this would be horrible.
by SwanBetter5239
2 Comments
Unfortunately, removal of infected plants is the only solution to aster yellows. The quicker you remove them, the less likely it is to spread. Clean up any debris in the garden. In the future, consider being intentional in your plant selection in order to diversify your garden. A well known rule of thumb in arboriculture is the rule of 10-20-30. You want no more than 10% of the same species, no more than 20% of the same genus, and no more than 30% of the same family in an urban forest to prevent any single disease or affliction from destroying a large portion of the individual trees that make up the canopy in an urban area. I think this rule can be loosely applied to small scale landscapes as well.
Unfortunately, removal of infected plants is the only solution to aster yellows. The quicker you remove them, the less likely it is to spread. Clean up any debris in the garden. In the future, consider being intentional in your plant selection in order to diversify your garden. A well known rule of thumb in arboriculture is the rule of 10-20-30. You want no more than 10% of the same species, no more than 20% of the same genus, and no more than 30% of the same family in an urban forest to prevent any single disease or affliction from destroying a large portion of the individual trees that make up the canopy in an urban area. I think this rule can be loosely applied to small scale landscapes as well.