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Plant, water, mulch, and prune garden trees and flowering shrubs without overlooking their different needs.
Search this topicNo single fall cut suits every rose. In Minnesota’s cold-climate guidance, autumn work focuses on damaged canes and reducing wind damage, with major shaping postponed. Hardy shrub roses need less protection than tender hybrid teas, and old-wood bloomers can lose flowers if cut heavily. Identify your rose and use local winter-care guidance rather than applying one height to the whole bed.
Secure the canes to their support so winter movement does not repeatedly whip or loosen them. For hardy climbers, Minnesota Extension emphasizes stability rather than heavy autumn shaping. Check the attachments and protect the base as appropriate for that rose and climate. Tender climbers may need more involved winter protection; tying alone does not give them additional cold hardiness.
Red color alone is not a dependable diagnosis. Look for a combination of abnormal features such as crowded, stunted shoots, unusually narrow leaves, excessive soft thorns, and distorted or aborted flowers. Photograph affected and normal growth for an extension diagnosis. Normal reddish young leaves should not automatically trigger removal of an otherwise healthy rose.
No. The virus is systemic, so normal-looking stems and roots can also be infected. Maryland Extension recommends prompt removal of infected plants and monitoring nearby roses; trimming only visibly distorted growth does not remove the infection. Sanitize tools used on the diseased rose before another plant, and consider a different replacement shrub where the source of infected mites remains nearby.
Remove fallen infected leaves, prune infected canes appropriately, and improve spacing and air circulation so foliage dries sooner. Water the root area rather than keeping leaves wet overnight. When replacing roses, seek varieties with local black-spot resistance. These steps reduce infection pressure but may not fully control severe disease; confirm the diagnosis before choosing any labeled treatment.
Turn over damaged leaves and look closely for small greenish-yellow larvae. Roseslug sawflies scrape leaf surfaces and chew holes; despite their appearance, they are not caterpillars or ordinary slugs. A hand lens helps you find them. Light infestations can be managed by removing the larvae, while a clear identification prevents choosing a product aimed at the wrong pest.
Gray mold, also called Botrytis blight, is one possibility when buds rot and petals become spotted or withered during cool, wet conditions. Inspect the actual fuzzy growth and surrounding flowers rather than diagnosing from brown color alone. Remove affected material and improve air movement; conditions often improve as weather becomes warmer and drier. Ask an extension service about persistent losses.
That pattern can indicate chlorosis, often associated with soil pH that makes iron unavailable, even when iron is present. Test the soil and review drainage and root health before adding fertilizer. Follow the laboratory’s correction advice. Do not use hydrangea aluminum sulfate as a casual fix: azaleas and rhododendrons can be sensitive to aluminum buildup.
Usually not if it stays soggy or collects runoff. Azaleas and rhododendrons need moisture but also good drainage; compacted wet ground can lead to root problems. Choose a site with suitable acidic soil, partial sun, and shelter from strong winds. Check how water moves through the area after rain before deciding that frequent moisture means ideal growing conditions.
No. Some mites feed on plants, while others eat pests or help break down organic material. Color alone cannot reliably separate them. Look for actual plant damage, use magnification, and identify the organism before treating. An unnecessary broad-spectrum spray can kill natural predators and make a plant-feeding mite problem worse rather than improving it.
After confirming mites, rinse accessible foliage with plain water, reaching the undersides without damaging leaves. Reduce drought stress, dust, and crowded growth, then inspect again for continuing activity. Predators already present outdoors can help. Avoid improvised detergent mixtures or indiscriminate insecticides; badly damaged foliage will not become healthy again simply because the mites have been removed.
Not always. A condition called smooth patch develops when fungi break down the outer rough bark without invading the living tree tissue. It can leave smooth, lighter depressions, especially on white oaks. Other bark injuries can look different and be serious, so identify the condition rather than scraping or treating it. Seek assessment when cracks, dieback, or structural concerns accompany it.
Wetwood can produce a liquid called slime flux that escapes through cracks or wounds during warm weather. Bacteria in water-soaked wood contribute to pressure and odor, and the streak may discolor bark. This condition often does not seriously affect tree health. Protect the trunk from mower and trimmer injuries, and get a diagnosis if the tree also shows decline or damage.
Leave identified bark lichens alone. They use the surface as an attachment point rather than taking nutrients from the tree. They can be more obvious on a sparse or declining plant because more light reaches the bark, but that does not mean they caused the decline. Investigate the tree’s growing conditions instead of scraping bark or applying a lichen treatment.
Spanish moss uses branches for support rather than feeding from the tree’s tissues. It usually causes little harm, although very heavy growth can shade lower foliage. A declining canopy and abundant moss may occur together without moss being the original cause. Evaluate the tree’s overall health before arranging removal, and leave work on high branches to someone equipped for it.
Identified barklice do not need treatment. These small outdoor insects feed on materials such as fungi, lichens, pollen, and decaying organic matter rather than damaging the plant. Groups can look alarming simply because many gather together. Confirm what you are seeing with a close photograph if unsure; the presence of insects on bark does not by itself show an infestation harming the tree.
Check whether it is a female plant and whether a compatible male flowers at the same time nearby. Winterberries have separate male and female plants, and bees move pollen between them. Two female shrubs do not solve the pollination requirement. Ask the nursery to match cultivars by flowering period rather than selecting any holly that happens to be labeled male.
Yes, winterberry is a deciduous holly, unlike the evergreen hollies many people know. Its bare stems can display colorful fruit through part of winter, so seasonal leaf loss alone is not a sign it has died. Confirm the plant’s identity and season before changing care. During active growth, continuing leaf loss or poor shoots still warrants a closer look.
Yes. Salt spray can injure foliage directly, while salty runoff can damage roots and interfere with water uptake. Evergreens beside treated pavement are particularly exposed because they retain foliage in winter. Compare the damage with the road-facing side and runoff path, but do not diagnose solely by location. Winter drying and other problems can create similar brown needles.
Remove snow promptly so you need less deicer, and apply it only where icy conditions require it. Keep product use within its directions and avoid treating landscape soil. Plan vulnerable plantings away from salt spray and runoff routes; consider locally suitable salt-tolerant choices near pavement. Changing the planting layout can reduce repeated exposure that annual replacement never solves.
Use the soil removed from the hole as the normal backfill rather than surrounding the root ball with a pocket of potting mix. Tree roots must establish beyond that initial hole in the surrounding ground. If the site has serious soil problems, address the broader planting area or choose a better location instead of making only the hole unusually rich.
Remove twine from around the trunk and root ball as part of planting, rather than trusting it to disappear before it restricts growth. Once the root ball is positioned securely, deal with burlap and the upper wire basket so roots can expand. Preserve the root ball while handling it; a large heavy specimen may need a professional planting crew.
No. A gravel layer is not a reliable cure for a wet planting site and can further reduce oxygen availability around roots. Evaluate drainage before planting. Depending on the site, the better choice may be a plant tolerant of the conditions, a different location, or professionally designed drainage. Avoid hiding a drainage problem beneath an expensive new root ball.
Minnesota Extension describes filling an approximately 18-inch-deep test hole with water and checking whether it drains overnight. Persistent water suggests a problem to investigate before planting. Do this only after locating underground utilities, and avoid testing immediately after heavy rain or while soil is frozen. Conditions vary within a yard, so assess the actual planting spot rather than a distant bed.
Source checks for these answers: September 22, 2026. Product instructions and local requirements can vary.