When Is It Too Late To Spray For Spider Mites?

Ah, the age-old question that has plagued many a cannabis grower: when is it too late to spray for spider mites?  Well, my green-thumbed friends, the answer is not as straightforward as you might think.  But fear not, for I am here to guide you through the tangled webs of spider mite control.  Buckle up;…

When Is It Too Late To Spray For Spider Mites?

Understanding Spider Mites

Understanding Spider Mites

First things first, let’s get to know our enemy. 

Spider mites are tiny, pesky critters that love to feast on the juicy leaves of your beloved cannabis plants. 

They’re like the uninvited guests who arrive at your party, eat all the food, and leave a mess behind. 

In this case, the mess is a damaged plant with yellow spots on its leaves and the potential for a significantly reduced harvest. 

Not exactly the kind of party we had in mind, right?

Spider Mite Control Options

Now that we know who we’re dealing with let’s talk about how to show these party crashers the door. 

Several methods exist to control spider mites, each with its own pros and cons.


First, we have Tweetmint, the gentle giant of spider mite control. 

This product is as gentle on plants as a summer breeze yet deadly to spider mites as a winter storm. 

It’s like the plant equivalent of a lullaby with a rock and roll solo. 

The best part? It leaves no residual effects, so your plants can return to partying quickly.

Neem Oil

Neem Oil

Next on our list is Neem oil, the long-term relationship in spider mite control. 

It’s not just a one-spray stand; it’s a commitment to keeping your plants safe and sound. 

You can spray Neem oil on your plants up to the 4th week of flowering, making it a reliable partner in your fight against spider mites.

CO2 Treatment

Last but not least, we have the CO2 treatment

This method is like the secret agent of spider mite control – it’s organic, non-poisonous, and highly effective. 

Remember to turn on those exhaust fans after a 1-hour CO2 treatment and let them run for at least 1/2 hour. 

Repeat the treatment after 5 days, and voila! You’ve got yourself a spider-mite-free grow tent.

When Is It Too Late To Spray?

When Is It Too Late To Spray

So, when is it too late to spray for spider mites? 

If your plants are more web than leaf, you might have missed the boat. 

But don’t despair! 

Even if it’s too late to spray, there are still steps you can take to mitigate the damage and prevent future infestations.

Spider Mite Control Precautions

Remember, with great power comes great responsibility. 

While CO2 treatment is highly effective, it can also be dangerous if not used cautiously. 

Always ensure you use the correct CO2 ppm levels and have adequate ventilation. 

And don’t forget to alternate your methods – spider mites are crafty and can become resistant if you use the same method too often.

Anecdotes and Experiences

I once knew a grower who used Murphy’s oil soap on flowering plants. 

Let’s say the buds looked like they’d been on a week-long bender. 

The hairs turned brown, and the overall quality was less than stellar. 

The moral of the story? 

Always use products designed for plants, and remember to clean your grow area regularly to prevent spider mites from crashing your party.

Additional Recommendations

Additional Recommendations

If you’re looking for more ways to keep those pesky spider mites at bay, I have a few more tricks up my sleeve. 

Azamax is an excellent option during the vegetative stage, and Avid can keep spider mites away for a few months. 

And let’s not forget about our little friends, the ladybugs

These natural predators can eat aphids and mites, and you can get 500 for just $12. 

Now that’s what I call a cost-effective alternative!

In conclusion, dealing with spider mites can be like playing a game of whack-a-mole. 

When you think you’ve got them under control, they pop up again. 

But with the proper knowledge, tools, and persistence, you can keep your cannabis plants healthy and spider-mite-free. 

Happy growing!


How do you kill spider mites in late flowering?

For late flowering, use residue-free products like Tweetmint to kill spider mites.

How do you get rid of stubborn spider mites?

To tackle stubborn spider mites, clean your grow area and alternate control methods, including Tweetmint and Neem oil.

What happens if you don’t treat spider mites?

Untreated spider mites can cause leaf damage, reduced plant health, smaller harvests, and could kill your plants.

Does misting keep spider mites away?

While misting deters spider mites due to their preference for dry conditions, it should be combined with other control strategies for effectiveness.

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