Can I Plant Two Weed Seeds Together

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Wondering if I can plant 2 auto's in 1 five gallon container? Would it really 'kill' both plants? It's my only option or I throw away the 2 seeds that I… A common question I get by email is, "How many seeds should I plant in each hole or cell?". It's a good question with a great answer — read on to find out! After the two seedlings grow out, you have a tough choice: Separate them or pick one to keep!

Can i put 2 seeds in 1 pot?

Wondering if I can plant 2 auto’s in 1 five gallon container? Would it really ‘kill’ both plants? It’s my only option or I throw away the 2 seeds that I put to germinate. Can’t buy soil anymore at this time of year in my city.

GrowUrOwnDank
Well-Known Member

Yes you can and it won’t kill the plants. Assuming it’s a fast variety it will be fine but, it will get crowded as they grow into each other’s canopy. Personally I would run single autos in a 2 gallon. 5 is a bit more than you need for the fast ones. Up to 13 weeks. But have done 2 in a 3 gallon. Not optimum tho.

Blitz35
Well-Known Member

the two I did previous were in 4 gallons each. I planned to do 4 now and 2 are planted in 4 gallons each again..but since I couldn’t get soil, the two germinating have nowhere to go now. I already planted one of them in the same 4 gallon as the other one is in. It hasn’t popped out of the soil..dug carefully, cant find it, tap root wasn’t visible when I planted 2 nights ago but seed was open slightly. As for the other container, that seed has popped through the soil..I was thinking replanting it in a 5 gallon with the last germinating seed in same container. Is it better to put a divider maybe halfway down the container so roots wouldn’t grow into each other as much?

Blitz35
Well-Known Member

These were the roots on last 2 auto’s alone in the 4 gallon. I did underfeed them as well in flowering. my first grow.

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Cpappa27
Well-Known Member

plant them both on the opposite outside edges of each other in the bucket and as they grow kinda put a stick in between them so they train to grow away form each other or tie em they wont get in each others way

Alienwidow
Well-Known Member

Do you only have room for a five gallon container? The best things you could do are get a larger pot. Square if possible, then plant in either corners but not right against the side. Ive seen whole warehouses done sog this way in square buckets. Nice yield.
Also try and train the plants so theyre not getting into each others business. You may have problems if ones a short one foot super cola, and one sqirts up five feet. Good luck.

cat of curiosity
Well-Known Member

it is never optimal to have two root systems confined in a container. roots will fight for dominance, like kudzu strangling shade trees.

and they may even communicate, almost always ends up being.

one boy, and one girl.

Blitz35
Well-Known Member

Do you only have room for a five gallon container? The best things you could do are get a larger pot. Square if possible, then plant in either corners but not right against the side. Ive seen whole warehouses done sog this way in square buckets. Nice yield.
Also try and train the plants so theyre not getting into each others business. You may have problems if ones a short one foot super cola, and one sqirts up five feet. Good luck.

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I had room for 4 four gallon containers. I only have 2 filled. I have about 6 litres of coco/soil left..so I can empty one 4 gallon into the 5 so I can put the 2 seeds in there, each maybe 2 inches from edge on opposite sides? The seed in there now is ‘easy bud’ from royal queen seeds..its not supposed to be big at all.

Bugeye
Well-Known Member
NoWaistedSpace
Well-Known Member

If you have a “Family Dollar” Store or equivalent close by, buy a 20gal square plastic tote for 5bucks. This will give you more surface area for 2 mature plants with 5gal bucket of substrate if you just have to plant in same container plus you have a 50/50 chance 1 will be male unless Feminized.

Blitz35
Well-Known Member

I can leave the 1 seed in each..i was just wondering with the options I have..what’s better..will it be better to put the 2 seeds in the same 4 gallon or throw them away and just leave the 1 each that are in there now? As for throwing auto’s away.
I grew the first 2 auto’s..took 60 days, made mistakes with feeding (improper fert), the two yielded maybe an ounce combined (used I think a dozen 23 watt cfl’s). Last one I grew a regular one..vegged 45 days..flowered 10 weeks with 14 same wattage cfl’s (Plant was healthy throughout), and curing now, looks like about 1.5 oz. So I thought with better care..the 4 auto’s should give me 3 oz’s in just over 2 months..so I chose that route.

Blitz35
Well-Known Member

If you have a “Family Dollar” Store or equivalent close by, buy a 20gal square plastic tote for 5bucks. This will give you more surface area for 2 mature plants with 5gal bucket of substrate if you just have to plant in same container plus you have a 50/50 chance 1 will be male unless Feminized.

seeds are feminized auto. Also, again..i cant get anything bigger..i only have max 1.5 gallons of medium left. its why my only option is switching the 4 gallon im using now and replant into a 5 gallon.

NoWaistedSpace
Well-Known Member

Well then, yes you can plant 2 seeds in 1 container. Main thing is get them up and then decide what to do. Maybe you can locate more coco etc. before the extra seeds get a foothold.

Blitz35
Well-Known Member

Well then, yes you can plant 2 seeds in 1 container. Main thing is get them up and then decide what to do. Maybe you can locate more coco etc. before the extra seeds get a foothold.

I can get more coco, but only on Monday. Seed’s taproot is already close to a knuckle long in the napkin..not sure it can wait till Monday. Maybe better just to plant for now in what I have and transplant in 2 days? Just wasn’t sure which is better. to have 2 in one pot for the duration of a grow, or shock an auto with an early transplant instead.

GrowUrOwnDank
Well-Known Member

Do you only have room for a five gallon container? The best things you could do are get a larger pot. Square if possible, then plant in either corners but not right against the side. Ive seen whole warehouses done sog this way in square buckets. Nice yield.
Also try and train the plants so theyre not getting into each others business. You may have problems if ones a short one foot super cola, and one sqirts up five feet. Good luck.

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Ive been watching these square pots for a while but am not growing anything at the moment. I would say better is to have smaller pots for each plant. Me, I’m all about 12/12 from seed tho so small and fast to harvest is my goal. It works. In my opinion most autos don’t need 5 gallons. Again small and fast is my goal so, I pick those types of genes to work with.

I had 2 sativa doms in a 3 gallon once and they actually did get to 4.5-5 feet tall but very lanky like a sativa. It worked out ok. Not optimum tho.

Blitz35
Well-Known Member

after a bit of chaos..they’re all separated now..the ‘lost’ seed grew out today right next to the one I planted last night lol. Will be looking for soil tmr to fill the 2 other 4 gallons up. Don’t want to do it in strictly coco as that will cause issues during watering. I’ll have to water 2 of them more often..with different ph, different feed slightly..i’ll try to make the same mixture as the other 2 have. Surely I can get 15 litres of pro-mix somewhere in the city.

How Many Seeds to Plant Per Hole, Pot, or Cell?

I recently got an email from Sally with a familiar question. It’s the same exact question that I had when I was a beginner gardener and wondered how to start seeds:

“I’m sure this is a silly question, but I always see it recommended to plant more than one seed per hole. But why? I just got a seed starting kit with some seeds and want to make sure I’m using them efficiently. Can you help me out?”

It’s a great question, Sally! Understanding the answer to this question will improve your understanding of gardening and seed starting in general, because the answer hinges on an important concept: seed germination.

Listen to this post on the Epic Gardening Podcast:

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Video Guide

Answer One: Seed Germination Rates

Not all seeds are created equal. Some plant species have higher germination rates than others. Even within a single plant type, some of the seeds are older than others, causing the germination rate to go down.

Imagine you’re growing arugula and the average germination rate is 90%. If you plant a 72 plant starter tray with one arugula seed per insert, you can expect only 65 of those plant inserts to actually germinate (72 x 90%).

Now imagine you plant three arugula seeds per insert. Each of these seeds has a 10% chance of failing, so the probability of them all failing is 10% x 10% x 10% = 0.1%. This means that you are 99.9% likely to have the seeds in that cell germinate. So in a tray of 72 inserts, it would be extremely unlikely you would have any seeds not germinate — barring other factors that affect seed germination.

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In short: Planting more seeds per hole increases chance you have perfect germination rates.

Answer Two: Seedling Selection

Just like not all seeds are created equal from a germination standpoint, not all seeds germinate equally. Sometimes you have a seed that shoots off like a rocket and becomes too leggy. If this was the only seed in your insert, you’d be forced to use it.

By planting 2-3 seeds per cell, you allow yourself to luxury of choosing the seedlings that look the strongest. All you have to do is determine which one you like the most, then snip off the other seedlings to kill them.

Exceptions to The Rule

Like most things in gardening, there are always exceptions to this rule of 2-3 seeds per hole.

If you’re planting large seeds like cucumbers, melons, or pumpkins, you should only use one seed per hole. However, you can still plant seeds close together and then thin them out once they’ve established themselves. You just want to avoid crowding these large seeds together so you don’t mess up the germination process.

If you’re growing certain herbs (cilantro, dill, basil), you can get away with planting multiple seeds per hole and leaving them all there as they germinate. These plants can handle being planted right next to each other and basically become one larger, bushier plant.

Now that you know how many seeds to plant per pot, you have a deeper understanding of seed germination in general. For more on seed starting, please check out the simple seed starting for hydroponics guide.

“Twin” Cannabis Seedlings

Twin tap roots can sometimes emerge from one cannabis seed. This is sort of like your seed having twins, because each new root has the potential to form into a separate plant! It’s not incredibly rare to get twins, but it is pretty neat to see it happen in person!

When this seedling sprouted, it had two taproots coming from the same seed

When the leaves appeared, there were two distinct seedlings – you can see another tiny set of leaves behind the main sprout!

In this case, I decided to kill the smaller sprout, but you can also gently and carefully separate the two seedlings and transplant one into a new home.

Examples of “twins” being born

From this grower, “When I got the seed it looked really deformed.”

If you grow two seedlings together in one container, their roots will become entwined and one plant will usually dominate, stunting the other one. But if you give each plant their own home, they can both thrive!

After the seedlings grow out, you have a tough choice: Separate them or pick one to keep!

In this case, the grower decided to save both!

In its new home!

It grew so fast it ended up getting rootbound in just two weeks!

A few days later after being transplanted to a new container, the plant is healthy and growing strong. At this point it’s a little under 3 weeks from separation of its “twin”

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