I have always had trouble with damp off in roses and I find that No Damp is the only product that works for me. What I need to know is how often after the initial application at germination does one have to apply the solution. Once a month? More? Thanks, Johannes
I tried viewing the instructions on the package on line and couldn’t find a link to them. What does the bag say? It appears (if you’re talking about the Mosser Lee product) you plant them in it and that’s it.
The product “No-Damp” has been discontinued. It is a 3.2% solution of oxine bensoate (also called benzoxine). I was able to find the label. The label says only two things about application of the product.
- NO-DAMP may be used at double strength for severe cases.
- If disease continues to progress after treatment with this product, do not increase the use
rate. Discontinue use of this product, and switch to another fungicide with a different target
site of action, if available.
It seems that re-application is not useful. Probably the persistence of action is considered sufficient to get seedlings past the critical period.
If you have had severe problems with damp-off for a long time, perhaps you should consider whether you are keeping the seedlings too damp. Excessively damp soil is mentioned in several places as a contributing factor in loss of seedlings to damp-off.
Poor air circulation is also mentioned as a contributing factor. Perhaps you could set a small fan to keep the air moving in the growing area.
If you are not sterilizing the growing medium before planting the seedlings, you might try that. I’ve seen a number of recommendations for this.
Several people on the forum have recommended putting a layer of perlite over the medium in the pot or flat or bed where germination takes place. Search the forum for other recommendations.
Hi Peter, I found on the Internet the same as what you said. I know that it is discontinued but I still have some.