Q.Why Are My Photinia’s Leaves Having Partial Discoloration? - Certified GKH Gardening Expert: I believe this to be a fungus that is common to the Photinia. Here is a link ...
A.I'm still fairly certain your dealing with a fungus. Here are a few more links. http://www.collierarbor.com/probPhotiniaLeafSpot.php http://herbicidesymptoms.ipm.ucanr.edu/?selectedCrop=172 https://ag.tennessee.edu/EPP/Redbook/3%20Disease%20Control%20for%20Trees,%20Shrubs%20and%20Flowers%20Feb%202014.pdfRead MoreQ.Tomato Plants Turning Yellow - The leaves of my tumbling tomato plants are turning yellow and curling up. They are in the garden in a ...
A.If the leaves are curling and there is little yellowing on the plant, the curling is likely environmental and not an issue. If the plant is yellowing as well, especially accompanied by spotting or wilting, it is likely disease. ...Read MoreQ.Geranium Leaves Are Turning Yellow - We've had a lot of rain and little sunshine for the last 3 weeks.
A.The excessive water and less then the ideal 6 to 8 hours of sun most likely is the issue. You can remove the yellowing leaves. Make sure your pots or containers are well draining so the plant is not sitting in soggy ...Read More
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Q.Canada Thistle Herbicide - Will a Canada thistle herbicide be taken up by food/root vegetable plants (and thus be eaten)? My new home was ...
A.There is much debate on how long herbicide residue lasts in our ground. Here is a link that has a great overview. https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/how-long-does-weed-killer-last-in-the-soil.htmRead MoreQ.Bell Pepper Plants Not Producing Flowers - My bell pepper plants have done really well this year, and I have picked at least 10 so far. ...
A.An average number of peppers per plant is 8 to 10, but this can vary with the variety your growing. Yellow leaves is usually a watering symptom. To much or to little. Containers need more water and even more ...Read MoreQ.Lilac Branches Falling Off - When we bought our home 14 years ago, there were 2 well established lilac bushes on the border of the ...
A.This can happen on old growth of the tree base. My own aged Lilac has lost a few branches from the older portion of the base of the plant. Here is a link with more information. https://www.gardeningknowhow.com/ornamental/shrubs/lilac/pruning-lilac-bushes-when-to-trim-lilac-bushes.htm https://www.gardeningknowhow.com/ornamental/shrubs/lilac/lilac-care-growing-and-planting-lilac-bush-plants.htmRead MoreQ.Coconut Fiber Planters - We have coconut fiber planters on our balcony; the birds have picked them apart. Is there something we can do ...
A.Birds are always searching for material to feather their nests. The article below has some ideas for deterring the birds from your plants. https://www.gardeningknowhow.com/plant-problems/pests/animals/birds-in-hanging-baskets.htmRead MoreQ.Drooping Coneflowers - I have 3 coneflowers planted 5, 3 and 1 year ago. They have buds and should bloom soon. In the ...
A.The Coneflowers droop as a mechanism to conserve moisture by presenting less surface to the sun. They are a prairie flower that like to be on the dry side. They will show sun wilt then recover in the evenings. https://www.gardeningknowhow.com/ornamental/flowers/coneflower/growing-purple-coneflowers.htmRead MoreQ.Peach Trees Dying After A Month Of Rains - We had about a month of massive rainfall and flooding to the area we live. Now our peach trees are ...
A.Here is a link with more information on caring for plants and trees effected by flood waters. https://www.gardeningknowhow.com/plant-problems/environmental/flood-damage-garden.htmRead MoreQ.Is Basil Hardy In S.W. VA? - What temperatures will basil tolerate? I live in South West Va. ; winters can be below freezing.
A.Basil is a rather short lived annual. You can expect it only to survive the summer and after that it will get woody. It is best to start a new plant for winter to grow indoors. Here are some articles ...Read MoreQ.Soil Depth - I have an area that is now hard packed gravel/dirt and I want to plant Rhododendrons there. Do I have ...
A.I would first loosen and amend the soil in this area so that it is healthy enough to support plants. This article will help with that: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/improving-compacted-soil.htm This article will help with growing and caring for rhododendrons: https://www.gardeningknowhow.com/ornamental/shrubs/rhododendron/rhododendron-care.htmRead MoreQ.Planting Flowers - I read how I can kill the roots of a bush that chopped down but my question is, can I ...
A.If the roots are continuing to send up shoots this can become an issue crowding out your new plantings. I would recommend you try to remove as much of the old shrubs root system. This would be a good time then to ...Read MoreQ.No Vegetables - All of our snow peas have beautiful plants, but there are no peas. What is wrong? Is there anything we ...
A.If you are getting plenty of flowers but nothing produces, then it is most likely due to poor pollination. Hand pollination often helps. These articles will help you with attracting more pollinators: https://www.gardeningknowhow.com/ornamental/trees/teak/insect-pollination-process.htm https://www.gardeningknowhow.com/garden-how-to/beneficial/creating-a-pollinator-garden.htm If you are not seeing flowers, then you ...Read MoreQ.Roma Tomatoes - The leaves on my roma tomatoes are curled up. The other tomatoes look normal. The romas have fruit on and ...
A.There are several reasons this could be happening. The most likely and harmless is temperature fluctuations. This article can give you some other possibilities: https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-leaves-curling.htmRead MoreQ.Lilacs - It seems that the blooms on our lilac bushes are losing their purple color and are more whitish. Is there ...
A.Flower color may lighten as the flowers age. There is not way to change the color of a lilac. Keeping your plant healthy with care and pruning is the best way to keep flowers bright. https://www.gardeningknowhow.com/ornamental/shrubs/lilac/lilac-care-growing-and-planting-lilac-bush-plants.htmRead MoreQ.Holly Bush - I have black tar sticky stuff on most of the leaves on my holly bush.
A.Holly Tar Spot is most likely the issue. Here is a link with more information. https://www.gardeningknowhow.com/ornamental/shrubs/holly/holly-problems-holly-leaf-spot-or-holly-tar-spot.htmRead MoreQ.Bleeding Peaches - My peaches are about thumb size now and they appear to be bleeding from pin pricks all around, almost all ...
A.This may be the Plum Curculio bug. Here is a link with more information. https://www.gardeningknowhow.com/edible/fruits/plum/plum-curculio.htmRead MoreQ.Hydrangea - I have a Hydrangea plant from last spring and it has no flowers, just green leaves. Is something wrong or ...
A.It is likely lacking a good phosphorus/nitrogen balance in the soil. Too much nitrogen or too little phosphorus will cause it to fail to bloom. This article will have some other suggestions as well: https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/hydrangea-not-blooming.htmRead MoreQ.Growing Tomatoes And Cucumbers - Can you grow tomatoes and cucumbers together? If not, can you tell me why?
A.Not growing tomatoes and cucumbers together is a bit of advice that really only applies if you are growing in a greenhouse. It is because they need different environments. Cucumbers like higher humidity which can negatively affect tomatoes by ...Read More
