How Cold Is Too Cold?

This winter has been intense here in the United States. When I say intense I mean COLD.

As a grower there are several key factors to keep track of to keep your plants alive and healthy. The main 5 are light, temperature, food, air, and water. In this episode we are going to focus on the temperature.

As everyone is gearing up for another light dep season or long season I figured we should talk about what is actually occurring right now and affecting your grows. You know, the cold weather.

In fact I’m really only going to talk about the low end of the temperature spectrum. I’m going to break the low end of the temperature spectrum into two categories. The first category will focus on the minimum temperature to keep your plants thriving. And the second category will focus on the minimum temperature to keep your plants alive.

These two temperatures are definitely not the same!

Plants cannot produce heat like animals. They strictly rely on their environment for their temperature. This means when it’s hot out, the plants get hot and when it’s cold out the plants get cold. And we all know that when it’s cold out that plants don’t grow very well and if it gets too cold they can even die.

For the purpose of this article there are some basic assumptions that I am making.

Assumption 1: These minimum temperatures occur during the coldest times of the night cycle and it never gets colder than this during the day.

Assumption 2: The temperature during the day gets at least 10 degrees Fahrenheit warmer.

Category 1: Minimum Temperature to Keep Your Plants Thriving

The lowest temperature you really want your plants to get to is 60 degrees Fahrenheit. Any lower than that and you risk slowing your plants growth rate down. This is because critical growing processes can’t occur when the plant gets too cold. And if that low temperature occurs in the soil where the plant gets it’s food and water from that will really slooooow your growing down.


Category 2: Minimum Temperature to Keep Your Plants Alive

The lowest you want your plants to get to is between 40-45 degrees Fahrenheit. The range is there because some varieties (indica dominant) can handle the cold much better than other (sativa dominant) strains.

Ideally you want to keep your plants minimum temperatures much higher than this but you may not have the resources to do so. You may be growing at a higher elevation, or growing off-grid or you may not have a greenhouse. So you make do with what you got.

As I tell my daughter you get what you get and you don’t throw a fit!

I hope this helps you during this cold winter season.

2018 Upgrades To Our Auto Light Dep Greenhouses!!

Recently I have decided to upgrade our auto light dep greenhouse kits. This was done after getting great feedback from you guys AND I agree with you guys!

The main upgrades make the system better for sure. There are 2 main upgrades: More wiggle channel and wiggle wire, and light lock ribs.

Let's go over the wiggle channel first. The wiggle channel now goes over the first and last rib. This securely locks the body greenhouse and endwall plastic down to the frame. Additionally the wiggle channel runs across the base of the front and back of the greenhouse to lock it down, so it won't flap and keep the heat in when you need it kept in. Lastly, there is wiggle wire and channel running around the door and door frame to keep the plastic tight.

As for the light lock rib, this was designed to create a better light seal at the ends of the dep. The light lock rib is just another rib that is place one foot away from the very first or last rib. The point of this rib is to wrap the endwall plastic around it in order to create a 12" light lock so that pesky light can't get through. The light lock rib is the white plastic on the left of the image below.

light lock.JPG

Why is Summer the Wedding Season?

I recently went to not one, but two weddings. On consecutive weekends & opposite ends of the country, no less. They couldn’t have been more different and yet the key elements were the same. One was a gay wedding in downtown San Francisco in a redwood grove (who knew!). The attendees were invited to dress as brides because there were obviously not going to be any brides in the ceremony. The other wedding was in Western Pennsylvania in the country. This wedding was a very traditional event, but no less spectacular. 

While each wedding was different the key elements were there: friends and family, a ceremony, professed love, great food, an open bar and a yummy wedding cake! 


I often wonder why weddings are in summer. Is it because of the warmer weather? Is it because schools out and people can get together easier? Or is it simply because that is the tradtion? Any way you slice it, a wedding is a great thing to bring people together old and young and to celebrate something meaningful. Whether you believe in marriage or not, if you have attended one where the 2 people coming together are truly in love you can feel it spill out on to you and thaw your iceberg of a heart (well that’s what happens to me anyways).

What I like about weddings is you know about them usually far in advance and you plan to take time off to attend. And if you are a grower in the middle of the busy season you know exactly how important it is to take a couple of days off here and there to help you to rest and recover from the daily bullshit of pulling tarp, listening to your partners/workers and just the daily routine of life on the hill.

At this point you might be wondering why I’m writing about weddings. Truth is I have no fucking clue except it was nice to go to them, because they were MY people. The last several weddings I went to, I was the plus one and my wife was the one who was invited.

I guess I’m at that age where not many of my people are getting married anymore. I’m 46 so that actually makes sense. I just hope the next wedding from one of my friends is local so I can tie one on and sleep in my bed!

Let me know if you’re getting married so I can congratulate you personally. And don’t invite me unless you’re local because I would have to bring my 4 year old and she will personally try to fuck up your ceremony with her cute antics. She tried during the last 2 weddings and I was the hero of those ceremonies because I dragged her ass far away before there was a scene! So I got to see the beginning of each one but not the ending. Boohoo! Still was worth it. 

Happy Summer Weddings! -James D