Grow Q&A: Burnt Leaf Tips

Dear Dan, My plants always seem to have burnt tips on the leaves. Sometimes more and sometimes less but every harvest I seem to always be looking at crispy ends to the leaves when I’m trimming. What is causing the burning and how can I avoid it in the future? – Smokey

Dear Smokey,
Burnt tips are always a sign of over-fertilization. Too much plant food causes the tips of the leaves to start to get crispy as you’ve described. Further over-feeding will only make the situation worse until you have a toxic level of salts in your plants and they begin to die. The important thing to remember when feeding your plants is that it’s much easier to add more food than it is to take food away.

The first thing you should do is to flush your plants with plenty of plain water to reduce any existing nutrient buildup. You might be noticing white residue on your plant pots. This is a sign of too much salt built up in your growing medium. Slowly add ¼ to half strength nutrient solution and you should see new growth emerge. Err on the side of caution and you won’t see burnt tips any longer.

The other added benefit to not over-feeding your plants is that your buds will taste better and burn properly to a clean white ash. Too much nutrient left in your flowers will make the taste harsh and can be harmful for medical patients with compromised immune systems. Your lungs will thank you when you take in a toke of clean-burning fertilizer-free cannabis.

Have a grow question? Ask away at

Leave a Reply

Your email address will not be published. Required fields are marked *

Related Posts
Read More

The Cold Cure

Freeze dryer technology is helping to speed up the drying and curing process.
Pink Boost
Read More

Following the Spirit

Cannabis breeder Katie Jeane finds harmony with Pink Boost Goddess.
Read More

Breeding for Dummies: How To Make Your Weed Plants Screw

Weed plants make sweet sticky love to each other just like your mammy and pappy did, albeit with a lot less grunting. Every time a weed plant gets laid, a new strain is born, kind of. But not every strain is destined for greatness. Read on to learn more about breeding.