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weed window grow

Weed window grow

Q: Can THC be topically absorbed? Could people who grow fail a drug test if they touch their plants?

If you’re 21 or older, Amendment 64 allows you to cultivate up to six marijuana plants in an “enclosed, locked space” in Colorado. (This is still illegal under federal law.)

Cannabis botany 101

Q:What are the dangers for those who grow?

Care, air and food

A: I actually never recommend starting a marijuana plant from seed, because you have to determine whether the seeds are male or female, which is difficult. Only female plants produce the flowers that are most desirable in terms of cannabinoid content. Male plants are pretty much unusable (for smoking purposes).

Then you want to throw the plants into the flower cycle (12 hours of light followed by 12 hours of dark). During the second to third week of flowering, prune the bottom third of the plant so it puts its growth energy into the top once buds form.

A: It is a daily, daily beast to take care of these plants. If you don’t acknowledge something it’s asking for for a day or two, you can lose two weeks of growth. Even if you do not mess up, that doesn’t mean you’re going to grow good marijuana.

You can measure humidity with a hygrometer from a hardware or grow store, and reduce it with a dehumidifier or air conditioner.

Weed window grow

In addition, if you use natural light only, your plant will adhere to a natural life cycle. That means it will only switch from the vegetative stage to the flowering stage in autumn, once the days are shorter.

The advantages are basically just the simplicity of it. Your grow takes up as little space as possible and requires as little equipment as possible (i.e. no grow lights).

That’s all you really need to get started growing weed on a windowsill. You may want to add a few fluorescent light bulbs (cheap regular ones are fine and this post will show you what to look for to make sure they will work) or small LEDs to supplement the natural light, especially during flowering.

I’ll give you all the pros and cons and help you figure out if you should be growing on your windowsill or if you’re better off doing it elsewhere.

Autoflower Seeds

Since seeds are pricey (though the top online seed banks usually have some kind of sale going on), it doesn’t make sense to spend good money on seeds, then grow them on a windowsill, where your results will be far from ideal.

If you have a small apartment with no balcony, you may not have space for a cannabis plant. And even if you do have some closet space, that would mean having to buy grow lights, to make up for the lack of natural light. A windowsill is space that is generally unused, so putting a plant there is easy and it won’t get in your way.

And if you’re not going to spend money on seeds and you don’t have that friend who can hook you up with autoflowers, you’ll likely end up with a regular plant that won’t flower unless it’s the right time of the year.


Time is also an advantage. How long does it take to grow weed? It depends on a lot of factors, but on a windowsill you can’t let the plant get too large, so that means much less time in vegging, which speeds up the entire grow.

If you are growing on a windowsill, you’re probably going to want to keep your grow as simple as possible. That means you’ll likely be growing bagseed, or whatever seeds or clone you can get your hands on.