There are a surprising lack of options when it comes to large grow tents.
Most brands focus on small and medium-sized grow tents, because there is a much higher demand for those.
When it comes to larger grow areas, most growers choose to use an entire room, instead of containing their grow inside a tent.
So why use a grow tent at all?
Because of the control a tent gives you over the climate, or the isolation it provides your plants from the outside environment.
They make it easier to keep out pests and light and keep in odors, temperature and humidity.
The problem is that the biggest grow tents are very expensive, unless you go with a Chinese brand. And most of those are not very reliable.
We give you a few options below: both reliable budget brands and the best big tents overall, if you have a larger budget to work with.
Best Large Grow Tents Compared
|Model||Size (L x D x H)||Height Extension||Price||Rating|
|20' x 10' x 6'11"||1' free,
2' more available
|$$$$$||5 / 5|
|Secret Jardin DR600-W
|20' x 10' x 6'8"||No||$$$$||4.8 / 5|
|Ultra Yield 1010
|10' x 10' x 7"||1' free||$$$||4.5 / 5|
|10' x 10' x 6'10"||No||$||4.2 / 5|
|10' x 10' x 6'10"||No||$||4.1 / 5|
Big Grow Tent Reviews
The following are the largest grow tents on the market that are any good. There are very few good options at the largest sizes, which is the reason for this article: we want to make sure you end up with a tent that actually works as advertised and doesn’t cost far more than it should.
If you do need something a bit smaller, but still large, all of the brands listed below have many different sizes of tents. When you go to the product pages, you will notice that they have multiple size options. The ones listed here are the biggest.
Gorilla Grow Tent GGT 1020: 20′ (L) x 10′ (D) x 6’11” (H)
The 10 by 20 foot Gorilla is the largest grow tent on the market, along with the next model below. It is also the highest quality model on this list, by far.
All Gorilla grow tents are extremely well made, with no plastic parts at all. They use incredibly tough canvas with a thread density of 1680D for the walls. The interlocking frame is made out of solid metal and is two to 5 times stronger than any other brand. It can support up to 300 pounds of weight.
The interior is lined with diamond reflective technology that more effectively directs light photons back onto your plants, resulting in less wasted energy. Dense threading, tight seals and heavy metal zippers further contribute to efficiency, by ensuring a completely self-contained environment.
The tent features a large front door and a rear access door. It also has several easy view windows. Ten inch double-cinching ducting ports allow you to run any size ducting into the tent, up to 10 inches in diameter.
The roof is made of special infrared blocking material, to ensure no heat signature. A heavy-duty spill tray, a tool pouch and bug-resistant pre-filters are also included.
Like all Gorilla tents, the GGT1020 comes with a free 1 foot height extension kit that allows you to add even more vertical space. If 7 feet and 11 inches is still not tall enough, you can purchase an additional 2 foot extension kit to bring the total height to 9 feet and 11 inches.
Gorilla makes the best tents on the market. If you can afford them, we always recommend their tents. However, they are very expensive and are simply not within everyone’s budgets. If your budget is limited, check out the next 10 by 20 model below.
- Extremely high quality
- Free 1 foot height extension
- Tallest tent on the market at 9’11” (with purchase of additional 2 foot extension)
- Includes tool pouch and water proof floor tray
- 1 year warranty
- Very expensive
- Often sold out
Secret Jardin Dark Room 600 Wide: 20′ (L) x 10′ (D) x 6’8″ (H)
The drop in quality from the previous model above to the Secret Jardin Dark Room 600 Wide is considerable. But so is the drop in price and this is still a high quality tent, that is much better made than any of the Chinese branded tents below.
Secret Jardin actually have a much higher quality tent of this size in their offering. It is the Secret Jardin Intense 600. Not only is it better made, but it also has an optional height extension.
It costs more than twice as much. We find the Dark Room 600 wide to be the far better value, which is why we list it here, and not the Intense 600.
While this is a sturdy and reliable grow tent, you can definitely tell right away that it is not up to the same standard as the (much more expensive) Gorilla 1020 or Intense 600. For one, the canvas material used has a thread density of 210D, instead of 1680D.
You also see the difference in the corner connectors. While the poles are made from steel, the corner pieces are all plastic.
The tent has four intakes and four exhaust opening that are all 13.8 inches in diameter. It has a further 4 cool tubes that are 10 inches in diameter and eight 4-inch openings for cables.
It comes with 4 water trays, 14 holders for lighting and filters, and all the supports, hooks, clips and straps you need. You also get a tool pouch and a net that you can use for a SCROG grow.
Overall, this is an excellent tent, but it does fall short of the Gorilla, as mentioned. Of course, it also costs far less. It is a great value, so we highly recommend this tent. The only real potential issue is the height. If you need more vertical space than 6 feet and 8 inches, you’ll have to go with the gorilla or the Intense 600 instead.
- Great value for the price
- Great build quality (but falls short of the Gorilla)
- Includes a drip trays, netting, tool pouch, and many clips, hooks, etc.
- 1 year warranty
- No height extensions available (limited to 6’8″)
- Build quality lower than the Gorilla, but still much higher than the models below
- 210D thread density is lowest on this list (but keeps down cost)
Ultra Yield: 10′ (L) x 10′ (D) x 7′ (H)
This Ultra Yield tent is basically a Chinese knock off of the Gorilla 1010 tent. We included it here, because it is a decent knock-off and it costs far less. Ultra Yield does not offer a 10×20 foot tent, so we went with their largest option: the 10 by 10.
The specs on this model are very similar to the Gorilla 1010. The canvas has the same thread density of 1680D. The poles and corners are all made from metal. The poles are 22 mm thick, which makes them some of the thickest on the market.
The interior is covered in diamond-patterned Mylar that is 98% reflective, which minimizes energy waste by reflecting as much light back onto your plants as possible.
This hydroponic grow tent has two large doors on the front that open from the middle and up to 180 degrees. There are two more D-style doors on the back. Each of the front doors has a 16 by 12 inch viewing window, so you can check on your plants without opening the doors at all.
There are several openings for ventilation, plus numerous ports for ducting and cables: two oval 13 inch ports, eight round 11 inch ports and six round 3 inch ports. It also comes with a removable spill-proof floor tray to make cleanup as easy as possible.
The Ultra Yield 1010 comes with a 1 foot height extension, too. But unlike Gorilla, they do not offer an additional 2 foot extension for purchase. That means the maximum height is 8 feet, instead of almost 10 feet.
Like Gorilla, Ultra Yield provides a 1 year warranty. However, as a Chinese brand, they are not as responsive as Gorilla and their quality control is not as good either.
It is always a bit more of a risk buying from a brand like this, but for many, the much lower price is more than worth it. Additionally, the overall quality is just lower. While the specs are the same, you’ll notice unfinished stitching and things are just not as well made.
That said, if you’re on a budget, it’s a great alternative and it does get the job done the way it’s supposed to. And it’s still better quality than the following models below.
- Good quality for low price
- Free 1 foot height extension
- Floor tray included
- 1 year warranty
- Less reliable brand
- Quality not as good as the previous models above
- No additional height extensions, apart from the initial 1 foot extension
TopoLite: 10′ (L) x 10′ (D) x 6’10” (H)
Now we’re getting into extreme budget territory. That is not necessarily a bad thing, but you do need to be aware that construction quality, quality control and customer service all take a backseat with these brands. But two do stand out a bit.
One of them is TopoGrow or TopoLite. It goes by both names. They make decent tents that are not amazing, but are very inexpensive. The TopoLite 1010 is their largest at 10 by 10 feet, with a height of 6 feet and 10 inches. You may have also come across a TopoGrow 1010.
The TopoLite has windows and metal corners. If you want to save a bit of money, the TopoGrow is a slightly cheaper version, without the windows and with plastic connecting corners, instead of metal ones. It is also 2 inches shorter. Apart from that, they’re basically the same.
Both versions have a standard 600D canvas outer shell. The inside of the canvas is lined with reflective diamond Mylar. It is not quite as reflective as the previous models above, however, with a reflectivity of 96% (which is still very high).
The entire support structure is metal on this one and, as mentioned, the corners are plastic on the TopoGrow, but the poles are all metal.
Both tents have six 16 by 8 inch mesh rectangular vents to allow for airflow. They also have four 13 inch and four 11 inch round holes for ducting. Then there are four 3 inch round openings for cables and such.
The two windows that are cut into the doors of this version are 14 inches wide and 18 inches tall each. They are covered by a formulated green tint that filters out white light. This allows you to check up on your plants without interrupting their daily cycle at all.
Even if the area outside the tent is lit up brightly, none of that light will get into the tent to disturb your plants. This is a great feature, because it makes it much easier to see how your plants are doing. You don’t have to worry about making sure the light outside the tent is off or is the right spectrum, and you also don’t have to bother opening up the entire doorway (and then worrying about the light even more).
The tent comes with a removable floor tray and a set of assembly instructions. Assembly is very simple and does not require any tools. Simply snap the poles into the connectors and cover with the Oxford canvas outer shell.
Belts for filters are included, but there is nothing for hanging lights (good grow lights generally come with their own hangers anyway), apart from the hanging bars. There are no height extensions available, so you are limited to the original height of the tent, which is six feet and ten inches.
- Sturdy construction with metal poles and corners
- Green tinted windows so light from the outside does not disturb plants
- Large front doorway and two secondary doors on the rear
- Many openings for ventilation, ducting and cables
- Low price
- Mylar reflectivity a bit lower at 96%
- No height extensions available
- Chinese brands are always a bit less reliable
VIVOSUN: 10′ (L) x 10′ (D) x 6’10” (H)
Vivosun is another budget Chinese brand, but also one that stands above most of the rest of them. We’ve recommended their HID grow lights on this site and their tents get a similar recommendation: they are not anywhere near as good as top brands, but they are far better than the majority of budget brands.
In other words: they are great value for money. But you do need to be aware that their quality control and customer service are both limited. There is always a chance you will get a bad unit and that it will be a bit of a hassle to get it replaced. That’s the sacrifice for the extremely low price.
Vivosun has a whole line of grow tents in every size, with the 10 by 10 foot tent being the largest. Like the previous model above, it stands 6 feet and 10 inches tall and there is no height extension available.
This grow tent also uses 600D oxford cloth for the outer shell and diamond reflective Mylar for the inner shell. The Mylar on this one is 98% reflective.
The poles are made from metal, as are the corners. Overall, the construction is sturdy, but the build quality is slightly lower than the TopoLite. Neither have a high quality look or feel, but this one is even a bit worse. That said, both are still solid pieces of hydroponic equipment that do the job, and since they sell for so little, you really can’t expect hand-crafted construction. They are made cheaply in a factory in China and they look it.
This unit also comes with a removable waterproof floor tray and straps for filters, plus a removable tool pouch. It has hanging bars for the lights that can hold up to 88 pounds each.
It has two large doors on the front and two smaller ones in the rear. It also has several rectangular openings for ventilation and a window that makes it easy to look in on your plants, without needing to open the doors. Of course, it also has drawstring socks for ducting and smaller ones for cables.
Vivosun rates this tent for 21 to 32 plants if they are growing in 3 gallon pots. That is a pretty accurate estimate for a 100 square foot space, but obviously, this depends entirely on plant size. This article goes into great detail on the number of cannabis plants that can fit into grow tents of various sizes.
- Strong 600D Oxford fabric
- Highly reflective (98%) interior lining
- Large doors and observation window
- Includes tool bag and floor tray
- Green and black looks better than most brands
- Low price
- Build quality not the greatest (it’s sturdy, but little details look unfinished, like hanging threads, uneven stitching, etc.)
- No height extension available