Do the leaves of cannabis have bumps?
Hemp is the botanical name for cannabis and the term hemp refers to the physical characteristics of the cannabis plant. Cannabis leaves are rough and have bumps, which can signify microbes.
SYMPTOMS
Tiny, white, cottony bumps appear on leaf axils (where leaves attach to stems) and undersides. Leaves are coated with clear, sticky, varnish-like substances on which gray-black mold grows.
DIAGNOSIS
mealybugs: long-tailed mealybug (Pseudococcus longispinus)
SOLUTIONS
• Sanitize
• Remove pests by hand
• Use beneficial insects
• Use insecticidal soap
• Use neem
• Use horticultural oil
SYMPTOMS
Reddish brown, mottled brown, tan, or white to reddish pink bumps appear on leaf axils (where leaves attach to stems) and undersides. Leaves are coated with a clear, sticky, varnishlike substance on which gray-black mold grows.
DIAGNOSIS
scale: cottony cushion scale (Icerya purchasi), European fruit titanium (Parthenolecanium corn), hemispherical scale (Saissetia coffee), white peach scale (Pseudaulacaspis pentagonal)
SOLUTIONS
• Sanitize
• Remove pests by hand
• Use beneficial insects
• Use insecticidal soap
• Use neem
• Use horticultural oil
SYMPTOMS
Orange or yellow bumps appear on the leaf undersides. Orange or yellow dust (fungal spores) rubs off your fingers. Yellow spots appear on upper leaf surfaces opposite the bumps.
DIAGNOSIS
rust fungi (Aecidium cannabis, Uredo kriegeriana)
SOLUTIONS
• Sanitize
• Weed
• Mulch
• Filter the air
• Move the air
• Use sulfur
• Plant polycultures
• Choose genetically resistant plants
• Rotate crops
• Create healthy soil
• Keep foliage dry