Organ pipe cactus

What are the fluffs of cotton where the thorns should be?

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1 Comment To "Organ pipe cactus"

#1 Comment By Downtoearthdigs On 04/09/2016 @ 9:15 pm

This is likely Scale pests.

They can be scraped away from the plant.

Neem Oil can also be used to treat Scale.
Here are some links with more information.
https://www.gardeningknowhow.com/ornamental/cacti-succulents/organ-pipe-cactus/organ-pipe-cactus-care.htm ^[1]
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm ^[2]

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[1] https://www.gardeningknowhow.com/ornamental/cacti-succulents/organ-pipe-cactus/organ-pipe-cactus-care.htm: https://www.gardeningknowhow.com/ornamental/cacti-succulents/organ-pipe-cactus/organ-pipe-cactus-care.htm

[2] https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm

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