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how big do weed plants grow

How big do weed plants grow

In mid-January, I planted my second seed. When she burst forth from the soil Jan. 19, the split seed casing clinging to the top of the green shoot reminded me of an armored helmet. Having just watched “Wonder Woman 1984,” I impulsively decided this powerful woman would bear the name of the Amazonian superhero’s secret identity: Diana Prince. Eager to avoid my earlier mistake, Diana Prince was transplanted to her forever home just five days later and then locked safely in my garage under the new grow light (20 hours on, 4 hours off). I visited my baby daily, watering her just enough to keep her healthy and thriving.

I planted my first seed on Oct. 19, 2020, opting for an easy-to-grow strain called Lowryder. Considered one of the first autoflowering strains of marijuana — meaning the plant flowers after a set period of time instead of taking its cue from seasonal light changes — Lowryder is a cross of Cannabis ruderalis, ‘Northern Lights No. 2′ and ‘William’s Wonder’ that yields a compact, indica-heavy plant. Based on the grow guide included in my kit, my plant would be ready to harvest just before Christmas. In a nod to the holiday season timetable, when the first green sprout popped out of the soil a few days later, I nicknamed her Mariah in honor of the chanteuse whose 1994 album “Merry Christmas” seems to flower like clockwork year after year.

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But the desire to get my grow on also has a lot to do with how I grew up in rural Vermont.

So after a few weeks of mourning, I decided to give pot-plant parenting a second try. And this time around, I was determined to spare no expense — potential tax savings be damned. I invested in a bathroom scale so I could weigh the plant between waterings, and when Taylor offhandedly suggested an LED grow light so I could raise my little green girl indoors, I immediately ordered one and cleared a spot in my garage, not far from where my hard-partying friends used to routinely smoke plants like her in the pre-pandemic days.

For almost as long as I’ve known about the cannabis plant, I’ve wanted to grow my own weed. This is partly because I like everything about it; not just the psychoactive effect of combusting and inhaling it, but also the way it looks, from the slender serrated fan leaves to the densely packed flowers shimmering with a crystal-like dusting (called trichomes, these tiny, hair-like structures are home to the high-producing compound THC). I like the skunky smell of a live plant, and I appreciate the fact that it’s only the female of the genus that will get you high.

When I was a kid, my family had a small farm (so small that it hardly qualified as a farm by Vermont standards) that started with a cow and grew to include a pig, chickens and a flock of sheep that grazed the field beyond our vegetable garden. Only the milk cow, Star, who had come into our family as my brother’s 4-H project, was ever named. We’d been taught from an early age that the rest of the hoofed and clawed creatures around us were livestock (as opposed to pets) and cautioned against forming an emotional bond.

How big do weed plants grow

Since then, Nebula has published hundreds of growing articles in print and online, and continues to dedicate herself to serving the medical marijuana growing community.

How long will it take?

The truth is, the time to harvest depends on your growing method, whether you grow inside or outside, your strain, and your desired yields…

Short plant in a small space – this plant is only about two feet tall thanks to training with a screen, yet still producing lots of bud! You don't need a huge space to get a good harvest when you use plant training.

For example, some strains (known as "indica" strains tend to stay short, while "sativa" strains tend to grow tall). Just to give you an idea of the difference, these plants were grown in the exact same setup.

Question: How tall should I expect my marijuana plants to get? And how long does it take until harvest?

Inside or Outside – In general, outdoor plants need longer to harvest than indoor plants. Outdoors, you plant in the spring, and harvest in late fall, taking 5-6 months or more. Indoors you have more control over the plant and can choose how long you want your plants to grow before harvest, and can get to harvest in just a few months. Indoors you can also start growing at any time (you don't have to wait until Spring to start growing).

Plants can be grown shorter than your knees, or taller than your house.

To learn about all the tools and techniques you have available to control the height and shape of your plant, take a look at our Plant Training & Height Control guide!