We find this to be an excellent precaution to pest infestation and other common problems. Shared with us by a generous grower Gaz on one of the fantastic grow forums.
What you need. Reference links attached.
•Cold pressed neem oil. (The amazon link shared here is of special interest. Do check out the fungus infected plant. ;)
•Soapnuts (Reetha)
•Boiling water
•Spray bottle
Plenty of info available on how/when to spray etc. Google is your friend. But drenching the plant about once a month is OK as long as your plants are not flowering.
Step 1
Boil a kettle and soak 2 nuts in 200ml/1 cup, of hot water for at least 12 hours.
Step 2
You can see the liquid is now yellowish and with a good stir you can see the “soapy” quality of the saponins. Maybe give ’em nuts a little squeeze ? So stir and remove nuts. You can compost these. it all just sounds wrong…
Step 3
Measure out 10 to 15ml of neem oil. If you don’t have a measuring cup then 3 to 4 teaspoons will do fine.
Step 4
Add the neem oil to the soap nut liquid and stir well. Then transfer this mix carefully to your spray bottle.
Step 5
Fill up to 1L with warm (not boiling) water, put the lid on, shake well, and use within 24 hours, ideally straight away.
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