Tom Thumb Cotoneaster Looks Good When Planted But Does Dies In A Short Time. Planted In Full Sun/partial Shade/ Well Drained Soi

Question

l. This planting and dying has happened two years in a row? Although it is early in the season, it appears that the plants planted last year have not survived. Branches are dry and brittle. Could something in the soil be causing this problem. I like the plants but am hesitant to spend any more money replacing them.

Answer 1

This will have two causes, mainly. Typically, moist soils will cause them to die, fairly, quickly. They prefer things on the dry side. When transplanting, it is necessary to allow the soil to dry out, thoroughly, between waterings. Keeping the soil moist with this plant will not be appropriate.

If this is not the case, and you know for a fact that the soil dries out thoroughly, then it could be a disease. There are many soil borne diseases.

You can take your soil samples to your nearest extension service, however. They can test it for you.

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/test-soil-for-pests-and-diseases.htm

https://www.gardeningknowhow.com/extension-search

https://www.gardeningknowhow.com/ornamental/shrubs/cotoneaster/how-to-grow-cotoneaster.htm