If by burning you mean turning yellow, your plant could be afflicted with a disease and, honestly, there are too many options to cite here. At this link << http://extension.psu.edu/pests/plant-diseases/all-fact-sheets/delphinium-diseases >> you will find a number of conditions, symptom descriptions, causes, and remedies. We hope you can find a solution…without having to destroy the plant. However, if that appears to be the best 鈥渕anagement鈥 as it’s called on this chart (at the link), you should consider returning the plant to the vendor, as the disease may have originated there, or at least telling the vendor of your experience.
If by burning you mean turning yellow, your plant could be afflicted with a disease and, honestly, there are too many options to cite here. At this link << http://extension.psu.edu/pests/plant-diseases/all-fact-sheets/delphinium-diseases >> you will find a number of conditions, symptom descriptions, causes, and remedies. We hope you can find a solution…without having to destroy the plant. However, if that appears to be the best 鈥渕anagement鈥 as it’s called on this chart (at the link), you should consider returning the plant to the vendor, as the disease may have originated there, or at least telling the vendor of your experience.