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A gardening report published Oct. 2 answers four reader questions about trees, including whether squirrel pruning harms oaks, how to respond to a rotting maple, what to plant after black knot and where to site a corkscrew willow. Its advice is to avoid unnecessary intervention, choose replacement trees with mature size and disease susceptibility in mind, and keep willows away from vulnerable pipes and septic systems.
Laidback Gardener published a report on Oct. 2 answering four reader questions about tree care, from squirrel damage to the risks of planting willows near pipes. The advice, drawn from Larry Hodgson’s archives, says small branches lost from mature oaks usually need no treatment, while a tree with extensive trunk decay should be assessed by a certified arborist if its failure could put people or property at risk.
One reader said squirrels were cutting branches up to 6–7 millimeters thick from three mature oaks during a heavy acorn year. Hodgson’s response says squirrels commonly cut young oak branches, possibly to reach acorns, buds or other parts of the tree. Losing small twigs is generally of little consequence for a mature oak, which typically produces more branches than it needs. The report advises tolerating the activity; repellents may be ineffective or impractical in large trees. More severe damage or the loss of larger branches would warrant an examination.
A second question concerned a mature maple with a rotting section of trunk and white grubs in the wood. The report says the larvae cannot be identified from the description alone and may be living in already weakened or decaying wood, rather than causing the tree’s decline. It warns that removing more decayed material can damage the tree’s natural barriers to decay. It also advises against wound paint, which generally does not help a tree close a wound and may interfere with its response. There is no product that can restore wood that has already decayed.
The other answers address what to plant after black knot and whether corkscrew willow roots threaten property. The report says a replacement tree need not wait in the ground after a diseased chokecherry is removed, provided the new tree is not a susceptible Prunus species. It cautions that pin oak can grow large and cast dense shade, while Russian olive is invasive in many parts of North America. Willows can exploit existing cracks or leaks in pipes, so the report recommends planting them away from old or damaged lines and septic systems.
When Tree Problems Need Action
The four answers distinguish between visible damage and a problem that calls for intervention. Small squirrel-cut twigs on a mature oak are usually not a reason to use repellents or prune further. By contrast, substantial trunk decay matters because the tree’s location may put people or property at risk if it fails. The report does not diagnose the maple’s stability; it recommends an arborist’s inspection where the consequences of failure could be serious.
The planting advice also bears on long-term garden use and neighborhood ecology. A tree’s eventual size and shade can affect perennials beneath it, and some suggested replacements may spread or be invasive. For willow, the practical concern is not that roots routinely break sound pipes or foundations, but that vigorous roots may enter existing leaks or cracks. These distinctions help readers avoid unnecessary treatments while taking site-specific risks seriously.
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Four Questions From Tree Owners
The report brings together questions from gardeners facing different stages of tree care: seasonal branch litter beneath oaks, decay in a mature maple, replacement of a chokecherry affected by black knot, and choosing a corkscrew willow for its twisted branches and winter bark. Hodgson’s answers are presented as practical guidance, not as on-site diagnoses of the individual trees.
In the black knot answer, the report says the disease mainly affects certain members of Prunus, including cherries and plums. A different species can be planted after the chokecherry is removed; the article says there is no need to leave the soil empty to “cleanse” it. It suggests smaller trees or some thornless honey locust cultivars for lighter shade, and cautions against black locust because it can sucker extensively. Its willow guidance similarly focuses on choosing a planting location that accounts for the tree’s vigorous roots, particularly in moist soil.
“There’s no “miracle cure.””
— Larry Hodgson, in the Laidback Gardener report
What the Report Cannot Diagnose
The source does not identify the white larvae in the maple or establish whether they contributed to the tree’s decline. It also does not determine the maple’s structural stability from the reader’s description; that requires an assessment of the actual tree and its location. The article gives general guidance rather than a diagnosis or guarantee about any individual tree.
The willow advice does not set a universal safe planting distance from pipes or foundations. The risk depends in part on the condition and location of existing infrastructure and on site conditions such as soil moisture. The report likewise does not name a specific replacement tree for every garden; light, available space and local conditions affect the choice.
Assess the Tree and Planting Site
For the maple, the next step described in the report is to contact a certified arborist if a failure could threaten people or property. The article does not recommend digging further into the cavity or applying wound dressing. Oak owners can monitor whether damage remains limited to small twigs; unusually severe loss or larger broken branches would merit closer assessment.
Before replacing the chokecherry, gardeners can check whether their choice is a susceptible Prunus and consider how large the tree will grow and how much light it will leave below. Those considering corkscrew willow should locate old or damaged pipes, septic systems and other vulnerable infrastructure before planting. The report sets no further publication date or official follow-up, so site-specific decisions remain with the property owner and, where needed, a qualified tree professional.
Key Questions
Do squirrels harm mature oak trees by cutting small branches?
The report says the loss of small twigs up to about 6–7 millimeters is generally of little consequence for a mature oak. More severe damage or the loss of larger branches should be examined.
Should I remove rotten wood or apply wound paint to a decaying tree?
The report advises against removing more decayed material or digging out a cavity, which could damage the tree’s natural barriers. It also says wound dressings generally do not help wounds close and may interfere with the tree’s response.
Can I plant a new tree immediately after removing a chokecherry with black knot?
According to the report, yes, if the replacement is not a susceptible Prunus species. It says there is no need to leave the site empty to cleanse the soil.
Can corkscrew willow roots damage pipes or foundations?
The report says willow roots can exploit existing cracks or leaks in older pipes, but does not say they spontaneously break through sound infrastructure. It recommends planting willows away from old or damaged pipes and septic systems.
Source: rss
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