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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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Overhanging Pine

Adding its mite of needles to the Waterfall

Random Bonsai Tip

To thicken thin branches make a cut just below the branch or a bud on the branch. The sugars produced in the leaves of the tree move down to the roots through the phloem, this flow of sap is interrupted by the cut and the accumulation of sugars above the cut increases the vigour as it is used by the bud, forcing it into action. As soon as the wound heals the normal sap flow resumes.