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Nutrient Deficiency Symptoms

BORON

New tip growth dies and the plants become brittle.

CALCIUM

Tips of young leaves curl and die.

COPPER

Young foliage wilts and dies, but there are few other indications of deficiency.

IRON

The edges and the tips of leaves may die and the new foliage is invariably light green or yellow.

MAGNESIUM

The leaf margins on the lower leaves curl and may have yellow spots with pronounced green veins.

MANGANESE

New foliage has yellow or dead spots but veins remain green.

MOLYBDONUM

Mottling of older leaves with veins remaining green. Leaves curl and there is die-back on leaf tips and margins. Young foliages soon mottles.

NITROGEN

Small leaves that turn light green or yellow; lower leaves are lighter in colour than those at the top of the plant and the plant is generally weak.

PHOSPHORUS

Plants have dark green leaves but the lower leaves are inclined to become purplish. Lower leaves may also become yellow between veins.

POTASSIUM

Yellow spots develop between the veins on the lower leaves. Leaf margins on older foliage may turn yellow or show signs of drying out.

SULPHUR

Plants have light green leaves, leaf veins are often light coloured and the upper foliage is considerably lighter in colour than the lower leaves.

ZINC

The lower and older foliage turns yellow, dead spots become holes, and the plant is generally stunted.

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Haiku

Sunlight dripping from tree

Slides off the periwinkle

And splashes on ground

Random Bonsai Tip

So much time is spent on striving towards perfection in the foliage area of trees but little contemplation goes into the area around the nebari. Consider planting your tree at different heights in the pot which might enhance the existing taper and roots. If your tree lacks roots use moss mounded in such a way to suggest underlying roots, or you can even use sticks of similar appearance to the wood of the tree as 'fake' roots until you are able to coerce roots to fill the void. Use appropriate gravel to complete the scene.