Categories
Compost

Does Applying Compost to Roses Diminish the Appearance of Blackspot?

rose with compost

I added an inch or two of compost under my roses in the spring, which greatly diminished the appearance of Black Spot on the leaves.

rose with compost
Categories
Compost

Does Applying Compost to Columbine Deter Leaf Miners?

As you can see from the top photo my Columbine were attacked by leaf miners last year.

Columbine
Without compost

This Spring I added a one to two inch layer of compost around my Columbine. The bottom photo shows this year’s leaf miner free plants.

Columbine
With compost

The addition of compost appears to have eliminated the appearance of leaf miners.

I don’t know how compost would deter leaf miners. Perhaps healthier plants are able to withstand leaf miner invasion? Perhaps leaf miners are attracted to weaker or weakened plants?

Predators tend to prey on the weak.