Q.White Tupelo Trees - I have a few white tupelo trees currently potted. I want to plant them next to my wetlands, what is ...
A.White tupelo is supposed to be difficult to transplant because of its taproot, but plants in containers are more likely to survive than bare root plants. You may want to ask advice of an extension agent (through your local university) ...Read MoreQ.Fall Pea And Carrot Seed Planting - I'm in Charlotte, and wonder whether Pea and carrot seeds will germinate when it's hot. If I wait until weather ...
A.Check with your County Extension Office to get a planting date specific your region. These articles will help you. https://www.gardeningknowhow.com/extension-search/ https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-7/planting-fall-gardens-in-zone-7.htmRead MoreQ.Rhubarb Harvesting - I picked rhubarb until the first of July and then left it alone. it has come back more than ...
A. While it is possible to harvest the stems in August, harvesting too many will weaken the plant and lead to a smaller harvest next year. The stems won't go to waste in either case because the plant will store the ...Read More
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Q.Rose Bushes - I have several shrub roses that I inherited from the previous owners of my house. I unfortunately had to have ...
A.I prune my bush roses gently at the end of autumn, just enough to prevent them rocking in the winter wind and coming out of the ground. I further prune them quite severely at the end of February, leaving ...Read MoreQ.Types Of Diseases - What causes plants to have black spots on the leaves and vines/stems
A.Leaf spots can be bacterial, fungus, pests or even caused by environmental issues. If you have the plant type and an image we can help be more specific. Read MoreQ.Hibiscus - Why is my hibiscus not flowing when the leaves are very healthy ?
A.Lack of flowers can be due to watering issues, pests, not enough sunlight or over fertilizing. https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/hibiscus-fertilizing.htm https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/how-to-care-for-hibiscus-plants.htmRead MoreQ.Cupressus - why is my potted cypresses sempervirens totem going brown?
A.There are a few possibilities. This could be lack of water, damage from herbicides, salts, or other toxins, or the following two pests: http://hortsense.cahnrs.wsu.edu/Search/MainMenuWithFactSheet.aspx?CategoryId=1&SubCatId=3&PlantDefId=2&ProblemId=299 http://www.extension.umn.edu/garden/yard-garden/trees-shrubs/spruce-tree-diseases/cytospora-canker/ These pests affect both Cupressus and other conifers. Check whether the discussed symptoms match your tree. https://www.gardeningknowhow.com/plant-problems/environmental/herbicide-plant-damage.htm Read MoreQ.Zebra Grass - I have had a clump of zebra grass for years & it has not grown or hardly spread out ! I ...
A.Feed zebra grass lightly every spring, using a light application of a balanced, general-purpose garden fertilizer. A second application is necessary only if the zebra grass displays weak growth or if the foliage takes on a pale, yellowish color. Refer ...Read MoreQ.Leaf Curl And Deformed Blooms In Rose Plants - Sir, I'm uploading the photographs of few of my rose bushes. I'm unable to find out the cause for leaf curl ...
A.Hello and thank you for sending your question to us here at Gardening Know How. It sounds like you are have problems with Sawflies. You will need to obtain an insecticide that lists them as a controlled insect. They will ...Read MoreQ.Dahlia Die Off - Hi! I have a Dahlia bed that faces east. All have come up big and are blooming,but one ...
A.Dahlia can suffer from several diseases. Thank you for the images, though despite these I'm not able to determine what is causing the die off. You can read the article below and do a bit more inspecting of your plants and soil ...Read MoreQ.Hollyhock Blooming - We have had two hollyhock plants in our warm Hawaii garden for over a year. They have an abundant output ...
A. Hollyhocks typically don't bloom in their first year, so they will probably bloom next year. To promote flowers, make sure the nitrogen content of the soil is not too high, because this will prevent flowering in many plants. Here is ...Read MoreQ.Acorn Squash - We tossed an aged acorn squash out on the horse manure pile when we didn't get it eaten, some time ...
A.Yes, you certainly can pinch off the new growth to try to give more energy to the fruit. https://www.gardeningknowhow.com/edible/vegetables/squash/ripening-green-unripe-squash.htmRead MoreQ.Aphid Control - I have read that neem oil as a foliar spray works to get rid of aphids. I have some neem ...
A.Yes, you can mix the neem oil with water plus a little soap to allow the oil and water to mix. Add approximately four teaspoons of neem oil per gallon of water, plus a few squirts of mild dish soap. ...Read MoreQ.Tuberous Begonias - Is it possible to leave Tuberous-rooted Begonias in the ground over Winter? Would they flower again as well in subsequent years? I ...
A. Most tuberous begonias would probably not survive this, because the ground would get too cold during the winter. One variety that your plan may work for is Begonia grandis evansiana, known as the hardy tuberous begonia, especially if it is ...Read MoreQ.Fern - I have a tatting fern about 5 years old. It was adorable at first but now it is trying ...
A.It sounds like you could be seeing fertile fronds, the reproductive structures of the plant, when in the past you have had mainly sterile fronds (the orderly looking ones). I am not sure if dividing the fern would increase the ...Read MoreQ.Red Peppers - My red peppers are getting a wrinkled "rotten" spot on the tops. What is causing this?
A.This sounds like blossom end rot. Please see the following article: https://www.gardeningknowhow.com/edible/vegetables/pepper/pepper-blossom-end-rot.htm Read MoreQ.Rubber Tree Is Dropping - My rubber tree was growing well for the last few months since I got it. However, I went overseas for ...
A.The cold exposure and lack of moisture certainly would make your plant droop. If the plant was in this position for a long period, it may not grow upright again. You could take cuttings and propagate some new plants from this plant. These ...Read MoreQ.Sago Palm Care. - The gardeningknowhow.com article on sago palm care is quite helpful but it did not deal with the fungus type problems that ...
A. Most sago palms (which are cycads and not true palms) are very slow growing so will remain quite small for years, but can reach about 10 feet when they are decades old. If yours have grown rapidly it is possible ...Read MoreQ.I Have A. Yucca Glorious Variegatat Hat Has Grown Too Large For The Area L - Am I able to prune it back at all & how would I do this. Many thanks Jenny Richards
A.Yes, you can prune this plant. This article should help you: https://www.gardeningknowhow.com/ornamental/foliage/yucca/yucca-plants-care-and-pruning-tips-for-pruning-a-yucca.htm Read More