beckygardener said:I think the soil and heat here in FL is part of the issue, but I suspect that it could be the root knot nematodes! (sigh) Maybe that is a good thing as we have enough invasive species here in FL already.
beckygardener said:Just out of curiosity .....
Are there any companion plants that I could plant next to my daylilies that repeal knot root nematodes?
blue23rose said:Good suggestion, Pat. I was reading up on root knot nematodes too and saw that marigolds were supposed to help manage the population. I found this article that backs up what you said and mentions that different types of marigolds will bring different results.
I'll note here for anyone who doesn't read it that it says 'Tangerine' marigold appears to be especially effective, while Signet is *not*. I find this confusing because I can't locate a marigold named Tangerine. There is a 'Tangerine Gem' which is a Signet variety. These are Tagetes tenuifolium. It does say that French marigolds in general are effective.
You are clearly aware of them but I think that nematodes, including root knot, are one of the most overlooked pests of daylilies. Easily overlooked ! As you know, they're in the soil and most are microscopic in size.
They do a lot of damage when their
populations are heavy by feeding on the roots. They divert a lot of the resources to their own growth. The wounds they make can be entry points for diseases including rots.
The first symptoms are that the plants start to wilt and/or look undernourished. Because they are! Frequent watering and increased fertilizing will forestall the potential for collapse for only awhile. If conditions get worse for the nematodes (such as much cooler weather) the plants may recover- until the next cycle.
I've received some daylilies from warm SE US places with sandy soils with roots badly stunted by root knot nemas (many of which were still in the roots, where the females imbed). A nematologist I showed them to was amazed they were still alive! Daylilies are indeed tough.
We manage our daylily nursery in South Carolina...
We use Promax Humagrow. .., It is a little pricey...
Feel free to call us, #s at our website, if we can assist in any way.
We manage our daylily nursery in SC, yes, nematodes are around. They're in the soil, and you can't completely get rid of them. The goal is to manage them, keep their populations down ..,
We use Promax Humagrow. You can apply it year round, but we apply it late summer/early fall ...
Becky, I was going to write a post about the potential benefits of amending your soil with organic matter and perhaps even some topsoil. Later. For now I just want to say these "humate" products are not the same thing.
I wish I had time to write more now. I just don't. But I want to put some brakes on this topic before it goes further!
The commercial humates promotion business has been around for at least 100 years. I have an article from the 1930's pointing out how ridiculous the claims were (and still are).
Hello Pat, wow, didn't expect that. Was just trying to provide daylily folks with ideas to deal with their issues. Didn't expect to be blind-sided. We've used Promax for our flowers with positive results on nematodes. No, not selling the product. Have no desire to. Yes, I do post a link to my nursery website. After all, I am in the business of selling daylilies. It would be foolish of me not to make people aware of what we offer. Our website; www.roycroftdaylilies.com
For now I'll offer this link. Taken out of context, some of its statements could be seen as positive. But that is not the emphasis. This was written by two major agricultural academic organizations in Australia.
Commercial Humates in Agriculture:
Real Substance or Smoke and Mirrors?
I have other articles I'd like to discuss, later.
I note that Huma Gro is mounting huge promotional campaigns and that it is soliciting distributors to "sell high quality products at higher margins". Margins are profits and you can bet they are high.
@jobe1, it seems whenever you post it's with a prominent promotional link to your website. Now I am wondering- do you sell these products ? If not, are you planning to?