Subscriptions are available from the Simcoe Resource Centre. I will fax and email the AgriPhone to last years list until the end of May and then only to subscribers. Ginseng plants that are through the soil where the straw is light or through the straw itself may show symptoms of cold temperature damage. Cold temperature damage resembles slug damage once the leaves unfold. Leaf tissue may be dark green and distorted.
Leaves can appear to be strap-shaped and spindly.
Another cold temperature symptom on leaves is a puckering between the veins. These plants will not be more susceptible to infection by Botrytis unless the surface has been physically damaged. Where leaf or stem tissue cells are actually frozen then infection by Botrytis is more likely - if the plants survive at all. If that happens then symptoms of rusty root will develop over the season. Now is the time in second year gardens where overwintering Rhizoctonia damage is evident.