Shade Plants Die - Knowledgebase Question

Old Bethpage, NY
Avatar for Shoichet
Question by Shoichet
February 8, 2000
What ever I plant under the oak tree dies. I had beautiful Hosta plants and all of the sudden they just died. I planted also shade plants and within a couple of weeks they too died. We have cats that like to pass in that area to go to the woods so if there are any types of pests that attack these plants by the roots, we need some sort non-chemical or natural remedie to kill these pests. I would like to also know if slugs could cause this type of damage and how to remedy this.

Answer from NGA
February 8, 2000
Based on the information in your description it is impossible to determine why the plants died. However, here are some possibilities. Newly planted plants require adequate moisture until they become established, and shade plants in particular tend to prefer a moist soil. They could have died as a result of the soil being allowed to dry out. If the soil was improperly or insufficiently prepared, the new roots would have had trouble penetrating the soil; again, this could cause them to die. If the planting location is sunnier than you realized, with say afternoon sun reaching the plants, then it may have been too sunny for them. This can kill shade loving plants, too, although it may take until about mid-June for the heat and sun to become intense enough to do them in. Overfertilizing can "burn" plants and in extreme cases cause them to die. Finally, accidental exposure to herbicide can also kills plants abruptly. Careless use of a lawn spreader, spray drift, and on a hot day possible volatilization of an herbicide spray can cause it to affect unintended plants.

Slug damage on hostas is fairly easy to recognize as they eat large continuous holes in the foliage and leave trails of "slug slime" behind on the plants an on the ground. They work at night, so you won't see them, but you will see more damage every day. In my experience they do not bother most other shade plants, so I would be surprised if that was what killed your plants.

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