aglbs wrote: Hi, I got a new tree and i found those dots on that tree. What is this? Is it dangerous for a tree? How to get rid of them?

Hi there, well I´m not sure you are having a serious problem with your tree just yet. Anyways, I´m leaving you here a post I´ve already posted before. It is linked to the most usual problems you can find on a tree that reflects on its leaves. Note, however, that this related to intrinsic feeding problems or the lack of nutrients, it does not comprise exterior causes like infections, bugs or fungal diseases. Hope it might help you.

Alain

alainleon1983 wrote: In order to try helping you with this problem I´m posting an image with the main/most usual problems that might occur to a tree´s leaves. The picture itself is written in Spanish, but I´m posting its translation here for you to understand it. Oh, the first 2 cases correspond to new leaves growth and the next 6 examples correspond to older or established leaves. (That is what the black line separates)

Hope this helps,

#1 Severe Nitrogen deficiency.
Small new leaves presenting a white/yellow coloration.

#2 Calcium deficiency
New pale and wrinkled growths (It could also be an overdose of potassium, magnesium)

#3 Iron Deficiency
Greenish nerves and old yellowish leaves

#4 Phosphate Deficiency (Phosphorus)
Older leaves presenting a yellow color with dark spots. The leaves die and fall rapidly (Note the similarity to early nitrogen deficiency)

#5 Magnesium Deficiency
Dark veins and old leaves with an extreme light green tint or shade

#6 Normal Leaf

#7 Early Signs of Nitrogen Deficiency.
Older leaves turn yellow, die and fall

#8 Potassium Deficiency
Very small holes with yellowish edges.