Q.Problem With The Tree Where No Green Leaves Have Come This Year, And Would Like Advice On How To Resolve It. - Hi, We have a problem with a tree in our garden as in attached pictures. No green leaves have come ...
A.It could be a Betula pendula and those are all common names for it that you specified. You can look at some of these leaf photos to see if they are the same as your tree had. Catkins are produced ...Read MoreQ.Will Your Garlic Spray Deter Possums From Eating My Orchids? We Live In Brisbane, Australia. - My orchids are in trees or beneath trees. While we had a dog there was no problem with orchids.
A.Do you really want to spray your orchid foliage with garlic spray? Spraying around them may help. There is another garlic recipe below plus you can buy it ready made. Opossums shouldn't be interested in your orchids. They prefer insects, ...Read MoreQ.Help! My Baby Lilacs Are Dying. What Can I Do To Save Them? - I transplanted baby lilac plants from a parent plant that I have. They looked good last fall, and survived the ...
A.I can see some webbing so it may be spider mites. There also may be a fungal disease going on, so spray the leaves with Neem oil, which should help with both. If the leaves drop, just remove them to ...Read MoreQ.Cutting Penstemmon Stalk That Had Flowered - Should I cut the stem which has already flowered so the lower stems can flower?
A.Yes, you can remove spent flower stems. Here is more: https://penstemons.org/index.php/cultivation/growing/59-pruning https://www.gardeningknowhow.com/ornamental/flowers/penstemon/penstemon-beard-tongue.htm https://www.rhs.org.uk/plants/penstemons/growing-guideRead More
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Q.Will Beneficial Nematodes Harm Honey Bees? - Hello, I read your article about using Beneficial Nematodes to control pests such as Japanese beetles. We have honey bees ...
A.If your bees are honey bees they won't be in the ground where the nematodes are. Solitary bees may nest in the ground, but this article says the "microbial products do not directly affect beneficial insects." https://biocontrol.entomology.cornell.edu/pathogens.phpRead MoreQ.Victoria Plum Tree Now Producing Small Bright Yellow Plums - An established Victoria plum tree was producing large purple plums until last year. This year the same tree has produced ...
A.I would say so. At some point, it began suckering limbs from the rootstalk, which eventually took over the tree. Here is more: https://www.gardeningknowhow.com/ornamental/trees/tgen/can-grafted-trees-revert-to-their-root-stock.htmRead MoreQ.Sorbus Drooping - Planted late last year this Sorbus has drooping branches and leaves. It’s still getting new growth but then just looks ...
A.Those brown spots on leaves usually indicate inconsistent watering or a disease, hopefully not fireblight. I'm concerned about the white spots on the bark. It could be scale insects, unless those are the lenticels, but they are usually horizontal. Borers ...Read MoreQ.All My Leafs Have Fallen Off My Red Vein, Can I Save It If The Roots Are Good - Got from an online nursery and it took awhile for it to get here
A.If it arrived looking like that the seller will probably replace it. If you think it has been overwatered, replace the soil in a clean container. You can try reviving it with this care: https://plants.ces.ncsu.edu/plants/fittonia-albivenis/ https://www.gardeningknowhow.com/houseplants/nerve-plant/growing-nerve-plants.htmRead MoreQ.What Is The Cause Of This Shrub Demise? - I have these on both sides of my front entry. The ones on the right are fine. The left, not ...
A.You may want to get the soil tested; there may be something amiss. It is possible the first shrubs had a disease that lingered in the soil, and now it has affected the second planting. Here is more information on ...Read MoreQ.Two Clethera Summer Sweet Plants - I planted two summer sweet clethera plants in same Area of garden. Everything is the same for both plants. One ...
A.It could be a problem with soil drainage or other environmental problems like too much sun and not enough water. Lightly work some compost into the soil around the plants to improve drainage. Mulching will help to keep the soil ...Read MoreQ.Why Do Some Of My Rudbeckia Blooms Look Different From The Rest? - Most of my blooms are drying out, I will harvest their seeds, but others have green hairy things on them.
A.It could be aster yellows disease. You may not want to save the seeds from the affected plants. Here is more: https://hgic.clemson.edu/aster-yellows/Read MoreQ.What Is Happening To The Leaves On My Apple And Plum Tree - They have been in 18 months, pear tree next to them is fine
A.The photo on the left shows insect damage including leaf miners and spider mites. Spraying Neem oil will kill spider mites. Leaf miners are inside the leaves and difficult to control. The second photo shows chlorosis of the leaves, where ...Read MoreQ.Pruning Sweet Cherry Trees - I have a sweet cherry tree in the ground approx 5 years old., it produced fruit for the first time ...
A.I think you meant the tree is "now sprouting branches from ground level." If so, yes, those are suckers and should be removed. They are coming from the rootstalk below the graft. Here is more: https://www.gardeningknowhow.com/ornamental/trees/tgen/tree-sucker-removal-and-tree-sucker-control.htmRead MoreQ.We’ve Had A Hydrangea For At Least 25 Years That Has Only Bloomed Twice. WHY? - We have done everything that we've been told, prune, wrap, feed. It did bloom twice, a tree fell on it ...
A.You may be pruning at the wrong time. This looks like a mophead or H. macrophylla and they are pruned after flowering because they bloom on old wood (the previous season's growth). If you are pruning anytime after mid summer ...Read MoreQ.What Is This Tree - I have this tree in my garden that has gotten really tall. I would like to know what it is ...
A.It looks like a rose of Sharon (Hibiscus syriacus) but they aren't usually that tall. It would look better if it were pruned about half its height. https://www.gardeningknowhow.com/ornamental/shrubs/rose-of-sharon/rose-of-sharon-bush.htm https://www.gardeningknowhow.com/ornamental/shrubs/rose-of-sharon/pruning-rose-of-sharon.htmRead MoreQ.Hole In Privet Tree. Should I Seal It To Prevent Problems. - It is an old hole caused by removal of a limb.
A.It is no longer recommended to seal a tree hollow. If you feel it is needed, this article tells you how. https://www.gardeningknowhow.com/ornamental/trees/tgen/patching-tree-hole.htmRead MoreQ.Why Are My Roses Producing Shriveled Up Blooms? - This is happening to both my plants that are in large pots. They are watered regularly but never waterlogged
A.It likely is botrytis blight. Thrips can cause a similar problem, so I've included a fact sheet on rose pests in addition to the disease fact sheet. https://hgic.clemson.edu/factsheet/rose-diseases/ https://hgic.clemson.edu/factsheet/rose-insects-related-pests/Read MoreQ.My Brown Turkey Fig Is Losing Its Leaves And Some Have Brown Spots - The fig tree is in a pot near a wall - westfacing. It has been watered regularly but not water ...
A.Has the pot been upsized or the soil refreshed? If not, that will help. It may have a fungal disease that is causing the spots. A fungicide may help stop the spread. These articles should help: https://extension.psu.edu/figs-in-the-home-garden https://plants.ces.ncsu.edu/plants/ficus-carica-brown-turkey/ https://site.extension.uga.edu/colquitthomeowners/2021/10/why-are-my-leaves-falling-off-my-fig-tree/Read MoreQ.Can You Please Tell Me What This Plant Is It Is Now About 5ft Tall And Growing Fast - It is all dark red many thanks Christine
A.It is a type of Celosia argentea, or cockscomb, that reseeds easily, but not always appearing the same as the parent plant. Here is more on its care: https://www.gardeningknowhow.com/ornamental/flowers/cockscomb/growing-flamingo-cockscomb.htmRead More
