Black-White Spots under Leaves - Help!

13 years ago

Help! Many plant leaves show black dots surrounded by white fur. What is it? The leaves die and fall down. Also, how to fight this pest? Thanks.

Image link:

Sort by:Oldest

Comments (8)

TheMasterGardener1
13 years ago
Copper soap from home-depot. Is the soil wet or does it have dry spouts? You need to let some dry time they need air in the roots.
rhizo_1 (North AL) zone 7
13 years ago
Can't really tell much from the image. What kind of plant is it and what is your general location? The previous poster seems to think that this is a fungus of some sort, but it looks like a scale insect to me....at least from that image.

Any chance of a different angle?
Related Discussions
Black spots, white spots, on cantaloupe leaves
Q
Comments (7)
Yeah didn't know that when I bought them on impulse. Saw 'em at Home Depot and was like, "Yeah, I'd like some of those." Been working down the row, planting the tomatoes, peppers, etc. Doesn't help that everything is clay! (See pic: http://forums.gardenweb.com/forums/load/tomato/msg061246098308.html?15 ). I've just been winging this whole thing. I'm only planting one. Got a mound 4in high and about 3ft wide with a lot of manure worked in and about 2 shovel-fulls of Miracle Gro garden soil. I've read variously to fertilize because they are heavy feeders and others that say don't fertilize a lot if at all (I forget why not), so I'm taking a middle road (I know that's a logical fallacy, the middle road is not necessarily the truth, but it seems like a good compromise is this case). Wondering if I should peel away as much of the peat pot as I can (after soaking it ofc) since peat is very acidic; I dunno about peat pots though. The last tomato I planted though had a lot of roots growing through the peat pot, guessing it probably true for these guys.
...See More
Help! Tiny black spots under leaves, white clumped up spots above
Q
Comments (3)
Very possible that the little black fellows are aphids. If so, they suck plant sap and will weaken the plant. Rub them off, or use direct hits of insecticidal soap, diluted according to label directions. In both cases, repeat as needed. I'm not able to see enough detail to suggest what the white might be.
...See More
brown leaves with black spots, some with white areas too.
Q
Comments (2)
Here is an update on the tree. We had some pretty big el nino rains over the winter time, so I can see the bacteria/fungus happennig. I am not sure how old the tree is. maybe 2-3 years? When I took over the house, it had a few avocados on it, and I read that they don't produce until about the 4th year, so maybe it is older than 3 years? I want to clear out the grass beneath the tree, thinking they are just eating up any nutrients that should go to the tree. Should I do that? or does it not matter much with these trees? Here is a new photo of the tree and it's tag. From what I am reading, this tree is fairly frost tolerant? It has tons of these little buds now that you see on the first picture., I assume they are leaf buds. I only water it infrequently with a deep watering if it's been without rain for a while.
...See More
Help!! Black leaves but not black spot?
Q
Comments (10)
I think its possible there was some dried residue left in the leaves then the sun hit it and it fried them. I would rinse the leaves really well w plain water and kinda rub with your fingers while rinsing. The new growth was more tender so probably fried quicker. You will probably have to wait for new growth to push through as it recovers. As it recovers, be careful with watering if you lose a ton of foilage..just water when barely dry because with less leaves, the rose needs less watering and you wont want to drown the roots. Let your rose tell you how much water it needs by checking the soil for dryness. Aphids can usually just be squished or squirted off with the hose. No need for insecticides :) Its easy if you have potted roses that arent too large yet because you can pick it up and tip it to get under the leaves with the hose or water faucet.
...See More
TheMasterGardener1
13 years ago
Yes it could be an insect too.
rhizo_1 (North AL) zone 7
13 years ago
The thing is....I'll bet you learned in your Master Gardener class that one shouldn't apply a control chemical without knowing what or who the problem is, as well as the kind of plant.
TheMasterGardener1
13 years ago
rhizo_1

"The thing is....I'll bet you learned in your Master Gardener class that one shouldn't apply a control chemical without knowing what or who the problem is, as well as the kind of plant." Never went to one class in my life you dont have to when you are born with a green thumb... I never have any probs with my gardens ever because my plants immune system and my climate are PERFECT. My preventative messures prob will stop me from ever learning the diff diseases. So while you wonder whats harming your plants Im wondering how im going to keep up with the fast growth of my plants.

The problem is there for a reason what ever it is can grow happy on your plants you need to find a way to make what ever it is life not so good so it can live.
TheMasterGardener1
13 years ago
BTW I know what you are saying because this is a forum to help people with pests. Rhizo is right you dont want to just dump anything on your plants. I am sure that rhizo is way more informative than I am. i am not going to comment in this section anymore unless i really know what the prob is I am just really only good with prevention which is very important.
Dan _Staley (5b Sunset 2B AHS 7)
13 years ago
Looks like scale to me too, but foto inadequate for any decent diagnosis.

Dan
hamiltoncj_earthlink_net
12 years ago
My plants have white spots all over the leaves...green beans, cucumbers especially, and the white spots spread, kill the plants finally. I can find nothing on the web on this and have never had it before. Nothing I have tried has helped. What could this be and what can be done? Thank you, Carol Hamilton

Related Stories

DECLUTTERING Downsizing Help: Choosing What Furniture to Leave Behind

By Becky Dietrich, Interior Designer

What to take, what to buy, how to make your favorite furniture fit ... get some answers from a homeowner who scaled way down

Full Story

HOUZZ TOURS My Houzz: Color Hits the Spot in a White-on-White Scheme

By Laura Garner

Bright red furniture strikes a dramatic pose against snowy walls and floors in a Montreal loft

Full Story

FALL GARDENING 5 Ways to Put Fall Leaves to Work in Your Garden

By Therese Ciesinski

Improve your soil and yard the organic way with a valuable garden booster that grows on trees

Full Story

143

DECORATING GUIDES So Your Style Is: Black, White and Read All Over

By Mary Jo Bowling

Make headlines at home with newsworthy decor

Full Story

BATHROOM DESIGN Room of the Day: Classic Black and White for a Victorian Bathroom

By Becky Harris

A claw-foot tub and a pedestal sink help keep this vintage Washington, D.C., bath open and airy

Full Story

FLOWERS AND PLANTS Aruncus Dioicus Is a Stately Plant for Shady, Moist Garden Spots

By Pollination Press LLC

Plant goat’s beard in perennial and woodland gardens. Its large white spring blooms attract bees, beetles and butterflies

Full Story

COLOR Pick-a-Paint Help: How to Quit Procrastinating on Color Choice

By Laura Gaskill

If you're up to your ears in paint chips but no further to pinning down a hue, our new 3-part series is for you

Full Story

298

REMODELING GUIDES Interior Brick: Paint it or Leave It?

By decordemon

Here's how to know if covering that brick is a sin or solution

Full Story

By Molly Brandenburg

Furry felines add to our decor in so many ways. These just scratch the surface

Full Story

280

COLOR Pick-a-Paint Help: How to Create a Whole-House Color Palette

By Laura Gaskill

Don't be daunted. With these strategies, building a cohesive palette for your entire home is less difficult than it seems

Full Story

123

Black-White Spots under Leaves - Help!

Comments (8)

TheMasterGardener1

rhizo_1 (North AL) zone 7

Related Discussions

TheMasterGardener1

rhizo_1 (North AL) zone 7

TheMasterGardener1

TheMasterGardener1

Dan _Staley (5b Sunset 2B AHS 7)

hamiltoncj_earthlink_net

COMPANY

BUSINESS SERVICES

GET HELP

CONNECT WITH US