I saw the thread you referred to & didn't comment. First, when you're talking about a micro-nutrient deficiency, you're talking about elements that are generally not mobile. Sulfur, chloride, copper, zinc, manganese, iron and molybdenum are marginally mobile in plants, but only under certain circumstances. Most of the mobility in the elements listed is usually associated with the breakdown of amino acids and proteins in older parts of the plant, only under nitrogen deficient conditions. IOW, they're only mobile when the plant is robbing nutrients from old tissues before they are shed, and translocating them to other tissues via the phloem stream. Since these elements are essentially immobile during periods of adequate N supply, a foliar application (spray) really doesn't do much good. It can alleviate the deficiency temporarily by supplying Mn to the leaves it contacts, but unless it rinses off the foliage and enters the plant through the root pathway, it won't be present in the nutrient stream to ensure the normal development of new growth. This is the reason that, no matter what advertising claims are made, Ca spray supplements are so ineffective at eliminating BER. Ca is considered immobile in the plant, so if Ca is not in the nutrient stream as new cells/tissues are forming, the tissue will form abnormally, with weak cell walls and other issues - BER. In the same vein as what you were mentioning, I don't like to advise people to use this element or that element to 'cure' an 'apparent' deficiency. Many 'deficiencies' aren't deficiencies at all, only symptoms of cultural inadequacies; or, they are deceptive, varying widely in symptoms, and even then, many of the symptoms overlap. One of the first things experts will agree on is that diagnosing many nutritional deficiencies is little more than a crap shoot w/o the benefit of tissue analysis, so there is a good chance the diagnosis will be wrong. Second, adding individual elements can easily affect the uptake of another or create a toxicity. E.g., if someone had applies an Fe supplement to try to 'green up the leaves', he might have unwittingly have caused a Mn deficiency. Fe and Mn are known as classic antagonists, and a deficiency/excess of one can affect the uptake of the other. Adding Mn only can affect the uptake of Fe, P, N, and other elements as well. It just makes much better sense to me to use a fertilizer that supplies the elements most apt to be deficient in container media, or to use a fertilizer like FP, that ensures all the essential elements plants take up via their roots are available in a favorable ratio. Ideally, when one element is getting to the point it is in short supply, they all will be - at the same time. Using fast soils that allow you to water so you're flushing excesses out before you fertilize again, helps to keep the ratios in balance, so there should never be a need to supplement individual elements. Plants DO take what they need and leave the rest, but it is decidedly in our favors to keep 'the rest' at a minimal level. If the person is actually using FP on a regular basis, it's unlikely there is a Mn deficiency unrelated to pH. Like Fe deficiencies that occur when using soluble fertilizers (they all contain Fe), the Fe is in the soil, but unavailable. Mn is affected by pH in the same way as Fe. My advice would have been to flush the soil thoroughly and fertilize; or, if the grower really was using the fertilizer regularly and at adequate solution strength, to add enough vinegar to bring the irrigation water pH down to 5.8-6.0. Al

Their roots don't go deep or long, so the non-herbicidal way to go is to sever the trunks slightly below the soil line. I'd think that would eventually kill the plant, but it would give you two or three years of peace anyway. You could likely do it with a sharp square-edged shovel.

OK will work on this. Some things may seem esoteric I love to experiment to create new gadgets, technologies, etc. As far as lighting effects. One could duplicate this with spark gap ( like a teaser) in a box with a air inlet and outlet. The using a aquarium air pump with air stone. Then circulate air from the box, through your irrigation water storage tank. Now days people have such great resources for information on the Internet. You can research anything you want. Maybe if you develop something,it sells, you can retire early. A taoist saying "A closed hand can receive no gifts".

Thank you both! I've never heard the sleep, creep, leap! I can get 1 and 2 gallon sizes as well. That may be better, as I'd like them to be fairly big next summer. Should I add compost to the soil?