cannabis potassium deficiency
Symptoms:
Leaf Colour:
Edges Appear Brown or Burnt
Pale Colour Leaves
Yellow Leaves - Lower, older leaves
Yellowing Between Veins
Veins of Leaves Stay Green
Brown or Dark Spots
Leaf Symptoms:
Lower Leaves / Older Growth Affected
Leaf Edges Appear Burnt
Leaf Tips Appear Burnt
Leaf Tips Die
Yellowing Between Veins
Veins of Leaves Stay Green
Spots
Old Leaves Dropping Off
Slow Growth
Twisted Growth
Abnormal Growth
Leaves Curl Under
Leaves Curl Upwards
Plant Symptoms:
Old Leaves Dropping Off
Slow Growth
Twisted Growth
Leaves Curl Under
Leaves Curl Upwards
Stretch (big spaces between nodes)
Too Tall
Other Symptoms:
Buds Not Fattening
Are tips/edges of leaves brown or burnt?: Yes
Spots on Leaves?: Yes
Cannabis Leaf Problem / Symptoms: With a marijuana potassium deficiency, you'll generally see symptoms on older leaves, but not always. Sometimes you'll see the symptoms at the top of the plant. Leaves with a potassium deficiency get yellow, brown, or burnt tips around the edges and tips. The burnt edges may look a little like nutrient burn, except the affected leaves also start turning yellow in the margins.
You may see the brown burnt edges first, or you may see the yellowing first. When the leaf symptoms are both present, it's a good sign you have a potassium deficiency in your leaves.
Plants may stretch and stems may become weak, but leaf symptoms are more noticeable. The leaf symptoms appear somewhat similar to an iron deficiency in that they can turn bright yellow, but the tips of the leaves curl as the edges turn brown, burn and die.
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cannabis potassium deficiency
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