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4 votes
Accepted

Bark on plum tree concern

Older .vs. younger bark. Nothing more.
Ecnerwal's user avatar
  • 25.1k
3 votes
Accepted

Why are my indoor grown Loquat saplings, grown from seeds, getting wilted and blackened leaves and dying?

You don't say what part of the world you are in, although you must be in the northern hemisphere since you mention ice and cold weather arriving. Loquat trees are not deciduous, so leaf loss should ...
Bamboo's user avatar
  • 135k
3 votes

Are these apple saplings turning yellow due to autumn or to a virus

The answer to this question will depend on the time of year (in this case november) and your region. For many regions in North America and northern Europe, november is a normal time for trees to start ...
Frank Houweling's user avatar
3 votes

Are these photinia's roots normal?

White are new roots, yellow are older roots and dark brown are older less active roots. Everything looks good with this plant! You could repot it as I see a lot of roots at the bottom of the pot. I ...
kevinskio's user avatar
  • 60.3k
3 votes

What's wrong with my apple tree?

Leafminers are responsible for the lines within the leaves shown in the first image. These are difficult to control even with using heavy duty pesticides about three times a year, so I wouldn't advise ...
Bamboo's user avatar
  • 135k
2 votes
Accepted

Is this apple canker?

This is the damage as done by woolly apple aphids. These aphids suck tree saps from your apple tree, and by doing so cause these deformations. The deformations themselves are usually not a big issue, ...
Frank Houweling's user avatar
2 votes

New Fig Tree Leaves Dying

I'm almost certain it's frost damage. Based on the time of year, your image and the description, your tree was most likely hit by a late spring frost. Luckily, your location should be frost-free in a ...
Sir Thinksalot's user avatar
2 votes

Identifying issue with apple tree

It appears that the internal chemistry of the seedling has been severely disrupted, possibly by over fertilization. The toxin may still be in the soil, given that you simply potted it up adding new ...
Colin Beckingham's user avatar
2 votes

Disinfecting greenhouse

If it was indeed well ventilated and the roots were not permanently drenched in water then the pathogens (bacteria and fungi) could have arrived via air, insects or birds. You can't do much about ...
Rohit Gupta's user avatar
  • 2,615
2 votes

Thuja Arborvitae Trees, 2 yr

That would be the fruit or "seed cone" https://www.ontario.ca/page/eastern-white-cedar describes them thus Fruit Cones grow in clumps of 5 or 6 pairs (7 to 12 millimetres long). And has ...
Ecnerwal's user avatar
  • 25.1k
2 votes
Accepted

What is this green powdery coating on a young cherry tree trunk?

Hard to be certain, but looks mostly like the remains of paint they used at the nursery to keep track of which variety was grafted to the rootstock before they planted it to grow out for a year or two ...
Ecnerwal's user avatar
  • 25.1k
2 votes

Is this leaf spot disease?

Yes, this is a fungus/virus/bacteria which has taken advantage of too much water in the root ball to get going. Diagnostic clues are: appears on older growth first starts as a spot then gets larger ...
kevinskio's user avatar
  • 60.3k
1 vote

Identify waxy spots on Agave Americana Variegata

I believe this is a fungal/viral/bacterial infection. Some of the diagnostic tests would be: only shows up on the older leaves starts as a small area and grows larger as the agent grows in stages ...
kevinskio's user avatar
  • 60.3k
1 vote

Dying Pachysandra

Good side has sun, bad side is shaded. Cut some trees or transition to a more shade-tolerant ground-cover where shaded. Pachysandra should not need irrigation in your climate, at least after initial ...
Ecnerwal's user avatar
  • 25.1k
1 vote

Peace lily green spots growing in pot

This is either a decay agent like mushrooms that is eating the organic matter in the soil or a slime mold which would be unusual but very cool. They are both harmless and are there because the soil is ...
kevinskio's user avatar
  • 60.3k
1 vote

Is this some sort of disease?

The picture is quite blurry, but what it seems you are highlighting is an axillary bud - a bud that grows from the join between a leaf and the stem. There's nothing wrong with your amaranth, many ...
Sir Thinksalot's user avatar
1 vote

Is my fairy castle cactus infected with a fungus?

Looks like a rot to me. Yes, for sure it is mold. Cactuses aren't meant to be left thriving in such a rich compost based medium, they prefer sandy soils with ample drainage. They can survive with too ...
Jayparth's user avatar
  • 1,120
1 vote

What are the spots on my lilac bush?

This is likely just transplant shock. The roots have been cut, the tops probably left intact and the roots that are left have a problem keeping up with transpiration from the leaves, so the plant ...
Colin Beckingham's user avatar
1 vote
Accepted

What is this damage on my Anthurium leaf?

This is fungus/bacteria/virus on an Anthurium which is brought on by the root ball being too wet for too long. An anerobic agent finds wet, dark and no oxygen to be a great place to live and then ...
kevinskio's user avatar
  • 60.3k
1 vote

Blueberry Plant is Sick or just Overwatered?

Zero idea what's wrong. In Your shoes - and if I insisted on it surviving - I would repot it into larger pot while preserving all the original soil (water just before as to keep the soil together, ...
Vorac's user avatar
  • 1,364
1 vote

Norfolk Island Pine

If no drainage holes in the pot, repot to one (preferably a bit larger) that has drainage holes. That's the only way I could see it being that much affected by the described overwatering. I had one in ...
Ecnerwal's user avatar
  • 25.1k
1 vote

avocado leaf getting black spots near vein

I don't know what they are. My best guess is a minute sap sucking creature. I found them on my year old avocado where they caused patches of paling of the leaf. I found I could scrub them of with a ...
Richard Avery's user avatar
1 vote

Marigolds, clovers, and other plants have leaves mottled with white

From My Marigold Leaves Have White Spots The red spider mites cause white spots on marigolds. They leave white weaves of webs, feed off your plants, turn the leaves yellow, and slowly kill your ...
Rohit Gupta's user avatar
  • 2,615
1 vote

My Air Plant (Kalanchoe Pinnata) is attacked, how do I save it?

This little green worm is a caterpillar. It is presumably red pierrot and is going to eat away all your plant. It's typical host plant is Kalanchoe and it is an exceptional leaf miner. So it will stay ...
surabhi shubham's user avatar

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