I have a couple of old lilacs that I pruned a lot last winter. This year they came back with a lot of new growth and a lot of very large leaves. However, no flowers. I tested the soil and its nitrogen is at the excessive level. Could this be the problem? If so, how do I get the nitrogen back to normal? I also planted a couple of new lilac starts near these bushes. They had some growth and new leaves during the summer. We also had a strange summer for rain. We would get 3+ inches of rain every 3 weeks or so but nothing in between and once it overtopped the rain gauge. I watered twice in spring before all of the rains. The ground has been damp nearly all summer and fall. Would this have any effect on their growth? The leaves also developed a silvery white coating in the last few months of summer and fall. If water depletes nitrogen, should I retest before I treat with anything?
Yes, the nitrogen is likely the problem. Excessive nitrogen causes lush growth of foliage but few flowers or fruits.
Water will not flush out the nitrogen unless it results from a recent application of fertilizer. Here are other ways to reduce nitrogen:
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/too-much-nitrogen-soil.htm
The silvery white coating on the leaves is probably lilac powdery mildew. It won't hurt the plant, but here are some remedies that can improve appearance:
https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htm
I have tubes from my gutters going to a hole I dug 3 feet deep. Water doesn't drain from this hole very fast because of the clay. Would it help to pour a couple of bags of gymsum in this hole to eat at the clay? How could I have this drain faster?
I can give information on amending soil in regards to planting and gardening but you will need to consult with a building or contractor for information on adequately draining water from your home.
When amending clay soil, you will need to work the added organic material into the soil, either by hand or equipment such as a tiller.
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/how-to-improve-clay-soil.htm
Does too much cow dung or coffee husks dry out soil in vegetable garden? We live on a coffee farm.
You are aiming for a loamy, well draining soil for most vegetable plants.
The links below will help you identify and achieve this!
https://www.gardeningknowhow.com/edible/vegetables/vgen/vegetable-garden-soil.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/what-is-well-drained-garden-soil.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/making-sure-soil-drains-well.htm
https://www.gardeningknowhow.com/special/organic/the-importance-of-soil-for-an-organic-garden.htm
How to tell if there is lead in the soil?
I have listed several links for you with more information.
I would also suggest you contact your local County Extension Office for information about testing soil for lead in your area or concerns that you have.
Here is a link to locate your closest office.
https://www.gardeningknowhow.com/extension-search/
https://soiltest.umass.edu/fact-sheets/soil-lead-testing-interpretation-recommendations
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/contaminated-soil-treatment.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm
My question is on where it says for a quick fix water plants several times with vinegar, 2 tablespoons in a gallon of water. How much is several times? Also, can I use it on plants that are in the ground?
I would say watering with vinegar "several times" means two or three times. Vinegar can be used to tweak the soil pH temporarily, but the effect isn't very long-lived and it probably can't be used to make drastic changes in soil pH. Vinegar works best in container plants, because soil microbes are thought to consume the vinegar when it's added to plants growing in the ground.
This article provides other options for lowering soil pH:
http://hort.uwex.edu/articles/reducing-soil-ph/
I planted tree that has very crimson leaves and like small damsons. After I dug around and put soil around and put flowers for some years, I think that it might be the case why is poor. I'm very worried. Thank you Maria Carter
I'm unclear as to the variety of tree that you are having issues with.
Was this a newly planted tree or a well established tree?
Is the tree showing signs of stress following a winter dormancy or did the tree have signs of stress right after you planted the flowers?
https://www.gardeningknowhow.com/ornamental/trees/tgen/planting-garden-beneath-trees.htm
My soil has tiny white worms. I don't like chemicals, how can I kill them with a natural product?
Worms can come from compost.
All healthy garden soil has worms. It is likely not an issue.
This link has more information.
https://www.gardeningknowhow.com/composting/basics/pot-worms-in-compost.htm