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Questions tagged [diagnosis]

Gathering of information and facts to determine the root cause of a plant that is failing to thrive.

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3answers
13 views

White residue in leaves?

What’s this white residue in these leaves?
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2answers
55 views

Help! What is wrong with this Coleus? Overwatered? Underwatered?

Not entirely sure this IS a Coleus plant so apologies if I'm getting it wrong from the start! Currently housesitting for a friend and while it was looking a little limp when she left, it's taken a ...
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0answers
25 views

Why do the leaves of my new Chinese Evergreen turn yellow even if I wait 5 weeks between watering?

Is there any way to tell when a Chinese evergreen really needs watering? After maintaining a Chinese evergreen for 24 years, it died of old age. This plant taught me to wait till it drooped before ...
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1answer
21 views

Viburnum Tinus buds getting dry

My parents gave me a couple of months ago a Viburnum Tinus (aka Laurustinus, or Durillo in spanish). It had a lot of "bud bundles" (I don't know the technical name for that, sorry), that looked nice ...
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0answers
52 views

What to do for the young avocado plant with brown spots on its leaves?

I've read the answers to two similar questions but as the answers were opposing, i couldn't be sure what action to take. Here is what I have: Here (Figure 1) is my Avocado plant, which i had potted ...
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1answer
25 views

Frostbitten cactus, turning yellow and black, can it recover?

I've had this cactus for a while now, last spring I moved it to the balcony and kept it there till now. I thought everything was ok but then I noticed that the side not facing the window was turning ...
2
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1answer
21 views

Dying/dead peace lily? Any hope of reviving it?

I’m wondering if I should keep trying to revive this peace lily or let it go. Its leaves are darkening and yellowing, and the yellow water in its water dish is grossing me out. I’m assuming it was ...
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1answer
33 views

Wounded rhipsalis hanging cacti

I need advice caring for my hanging cacti. I think it's rhipsalis lepismium bolivianum? It's started to develop black patches along its limbs. Also some weird spots. And some white muck gathering, ...
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0answers
26 views

Black spots on echeveria leaves - cause?

Activity on 28-01-2019: Watered - soil is damp as of 29-01-2019, but it is a fast-draining cactus mix. Pest control - sprayed 2~3 times with pyrethrum bug spray (brand below) Fertilized - about half ...
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0answers
15 views

What is this coloration on my Pachira aquatica?

About a month or two ago, a few of my succulents died from some white fungus. Since then, I’ve been a bit paranoid. I’m seeing some white discoloration on the tips of the leaves of my Pachira ...
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2answers
81 views

What kind of cactus is this, and why is it drooping?

Why is this cactus drooping? I tied the top so it would stay upright and not droop, but now it’s starting to droop anyway over a period of two months. The plant belonged to my deceased fiancé and I ...
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1answer
43 views

Please help me identify this houseplant

I’ve had this plant for about two years and it grows so well in our sunny office window. I don’t know what it is and it’s getting tall that it droops. Should I be tying it up? Should I be trimming it? ...
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1answer
14 views

my sago palm is yellowing

I bought 2 little sago palms in a small pot with glued stones around it. I try to water it but can't tell if the soil is dry or wet because of the stones glued around them. What should I do?
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0answers
8 views

china doll tree

I have a China doll tree that is only a metre away from the house. It is approx. 8 feet tall. I would like to remove it but would it cause damage to the foundation?. I believe it is the cause of ...
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3answers
309 views

Is this pest? Please help me get rid of it

This is the leaf of my Poinsettia. I bought it just two days ago from a local nursery. It came with these tiny yellow, black, white spots which look like pest. The white ones are definitely some kind ...
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0answers
19 views

Sago Palm - Won't put out more than a few fronds at a time

How do I get more growth from my Sago Palm? It never puts out more than one circle of fronds at a time until this winter. It put out three very long fronds as a second circle, but the leaves are dying ...
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0answers
9 views

What is wrong with pedilanthus?

I live in Uttar Pradesh, India and I have planted pedilanthus in my vertical garden. They are in bright indirect sunlight. Their tips are turning pink and there is also some white fungus. What should ...
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0answers
18 views

Leaves on my Dracaena reflexa have died because of cold and I trimmed them

I am currently located in Srinagar (India) the winter has been a tad too harsh this year with night temperatures plummeting to -7 degrees C all the leaves on my Dracaena reflexa gehich I had forgotten ...
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2answers
30 views

Why is my plant turning white/yellow

It’s winter here in Quebec city, and I feel like my plant is slowly dying. At first I thought it lacked sun, do I putted it on the windows border, but the furnace in just below so it might have dry ...
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1answer
23 views

What's wrong with my tamarind?

These four saplings are grown from seed around 6-10 months was growing perfect untill around 4 weeks ago I started to see a little bit of yellowing thinking its nothing untill now.
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1answer
44 views

Black Patches on Watermelon Peperomia

My Watermelon Peperomia that I purchased about 3 weeks ago keeps turning black! The leaves get cracks in them and then get these thin black areas that spread. There does not appear to be pests on the ...
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0answers
29 views

Buxus sempervirens - Deformed leaves

Can anyone help me? Suddenly my Buxus sempervirens appeared with the new shoots with deformed leaves. I'm in zone 9. It has not been cold though, and yes, it's a lot humidity every night.
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2answers
37 views

New growth on my schefflera is yellow

I have recently repotted my schefflera plant (it stopped growing due to how small the previous pot was) and it’s started growing again but all the new growth is yellow! The old leaves are perfectly ...
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0answers
15 views

Brown leaves on shrub

Anyone know what’s happening with this otherwise healthy looking shrub?
2
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3answers
94 views

Why are my strawberry leaves turning brown at the tips?

As you can see in the picture attached, the leaves of the strawberry plant are turning brown at the tips and I don't know why. While it has recently moved to a new home, it is always indoors by the ...
2
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2answers
43 views

What is happening to my Serrano Pepper?

I recently started gardening and this is one of my first plants. Can you help me understand what's wrong with it? Location: Souther California (warmer weather). Plant location: In a pot, outside (5th ...
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2answers
49 views

My poor sick apple tree - what’s the mould?

This apple tree has this growth on many of its branches (say, 30%). It also hardly produces any fruit. How can I make this tree healthier?
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0answers
26 views

Why aren't my year-old apple seedlings thriving?

I planted a variety of seeds from apples from a local orchard. They have been growing for almost a year. They are about 8" and have suffered aphids and a white powdery fungus. I have sprayed plants ...
3
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0answers
42 views

What are these brown and white patches on my jelly bean succulent / sedum rubrotinctum?

I recently bought this jelly bean succulent but I didn't notice these brown and white spots. I really should've check the plant, but I just love succulents and I was too excited. Seems like the white ...
5
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1answer
84 views

Why are my avocado plant leaves brown and brittle?

I have a small avocado plant that sprouted from seed this summer (June). It was thriving for a while and then it stopped growing and started getting brown leaves. The leaves start getting brown on the ...
3
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0answers
52 views

Kalanchoe - thin leaves and white spots

This Kalanchoe has been losing leaves for a while now, the existing ones seem thin and white spots have appeared. I have repotted it recently and it has shown signs of improvement, but it still does ...
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0answers
25 views

Dying Peace Lily

I have a Peace Lily which has done well very a year in front of sliding doors. It has started drooping like it needed water to which I watered it and usually it perks right back up. It didn't this ...
3
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1answer
27 views

Flies on gardenia

My gardenia leaves looks healthy. I moved it indoors more than one month ago and I started noticing few yellow leaves. I spray it with NEEM oil and soap pesticide about once a week. I have noticed ...
3
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1answer
56 views

Unhealthy orange tree

Our young orange tree (planted in the spring) has been healthy but growing slowly. I’ve noticed light blue spots on the leaves (EDIT: upon a second look, I realized that the spots are really white, ...
2
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1answer
50 views

What is happening to my Agave attenuata

I have owned the depicted Agave attenuata since about half a year. It was outside until early November when local temperatures became too cold. Now it resides in in a light, moderately heated room. (...
2
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1answer
108 views

Strange spots on leaves on rubber plant (Ficus Black Night)

I purchased this plant about a couple weeks ago and when purchasing I saw these strange tiny black spots underneath the leaves but I went ahead and purchased anyways since it was the last one left. ...
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2answers
70 views

Reviving rubber tree - almost all leaves are gone - one shoot left

I moved away for a year, and left my rubber tree with a friend - unfortunately I think the move shocked it, and it's now lost almost all of its leaves. Do you have any tips on what I could do to ...
2
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1answer
29 views

White spots on leaves

Hi. I hope this is right place for the question and that it's not a duplicate I am concerned by the white spots as shown in the picture. What can that be? It affects only one of two plants sitting in ...
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0answers
38 views

Why are my potted outdoor Plumeria leaves turning yellow and brown?

All the leaves are yellow, with red around the edges and then eventually start turning brown?
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0answers
13 views

Magnolia leaves browning and falling

My Kay Paris Magnolia has browning leaves, which ultimately fall off. I also notice spotting on the leaves. Neighboring trees have a scale problem, but not much on this tree, which I also put white ...
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1answer
42 views

What's the name of this plant [closed]

DID ANYONE KNOW THE NAME OF THIS LEAVES FROM THIS SKETCH?
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1answer
62 views

Why are the ends of my strawberries not formed properly?

My strawberries have just started fruiting and they have turned red quite nicely, except that the ends seem to be this brown/black colour which hasn't gone away. They are growing in a home-made ...
2
votes
1answer
33 views

Browning aloe leaves - what do I do?

My aloe plant is currently browning a little. I reported it about six weeks ago into a cactus and succulent mix. I separated some of the aloe pups to grow, they’re currently doing something similar to ...
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0answers
65 views

Cactus shoots drooping and turning olive

Hey Gardening & Landscaping SE, happy to be a new member! I am concerned for my cactus shoots and hope you are willing to help me out. Short version: My 3,5 months old cactus shoots are starting ...
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votes
1answer
51 views

I can’t figure out what’s wrong with my aloe

I’m getting worried about this little plant. It was potted about two weeks ago, I watered it on Sunday (waited about a week after putting before watering the plant). Now the bottom leaves are ...
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0answers
33 views

Peace lily leaves with small, round bumps. Is this normal?

My peace lily (purchased and repotted two months ago, kept in medium light environment in town with hard water) has some leaves exhibiting round bumps along the main stem. Is this normal? If not, what ...
3
votes
1answer
66 views

How can we save the trees in our historical garden from dying?

Our historical building is located in a big garden with 2700 pine trees in Khaf city, Iran, and about 300 trees have died. Is there anything we can do to save these huge trees? Khaf city has warm ...
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0answers
25 views

Pineapple leaf discoloration?

Can some tell me what’s going on with my plant? I have not done anything different and this started when we moved it inside.
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1answer
57 views

Can These Plants Be Saved?

I believe the more dead one is sage. How should I help it? Also the plant with brown ends on the stems is mint. Should I cut off the brown bits? I don't care about harvesting or eating them I mostly ...
2
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0answers
42 views

Why are my tomato plant leaves turning brown, shriveling, dying?

This has been progressive over the last 6 weeks, leaves turning dry, brown and getting very thin and shriveling like paper on a Tomato "Blue Berries" cherry tomato plant. The closest I could guess ...