Sativa vs Indica

I have been growing predominatly indica's in my hydro setup...and doing pretty good.

But when i throw a couple sativa's into the mix, the leaves get only what i can explain as fake looking...They get really dark green and almost a plastic look...they even get a little wavy...

The first few sativas were some bag seed i brought home from Jamaica... The smoke gets you good and high, but the yeild is tiny. They start strong for 2-4 weeks then stop...but every other plant around them is thriving.

So this time i got some Durban Poison clones...and sure as shit the leaves are starting to look like something in American Furniture Warehouse.

Is there something different i need to do with this strain. I am running pretty close to what most would consider optimal conditions.

temp 65-70 night 80-85 day
lots of quality light
co2
water temps 65-70
ph 5.8-6.0
nutes are in line to what the other plants are asking for
good exhaust

Just a little confused. Check out the pics and let me know what you all think. Thanks.

looking healthey doing great

Do you see what im saying though? Have you encountered this?

Here is a pic of what i think is great.

good start to some nice buds looks green

Yeah those are lookin pretty healthy if you ask me. I have an indica/sat and a sat/indy going in a scrog right now and it's definitely obvious the sativa has a longer flowering time just because of how slow it is. From what I've learned, sativas take a couple more weeks to really start to show, but when they pack on the weight is in like 9-10 weeks, then they ripen at about 12. Depending on how much sativa is really there it could take as long as 14 weeks(landrace outdoor strains are popular for this) and some sativas with more indica in them will finish at 10 weeks. It just depends on the genetics. Either way harvest when the trichs start turning amber and you shouldn't have any problems!

They all look great to me so good work!

I understand the longer flower times.

This is more of a growing tech. question.

What is good for the indicas doesnt seem to be so good for the sativas.

Do you get the plastic look?

I can see what you mean about the waviness of the leaves, but the color looks healthy. Different strains do have differing nute needs sometimes and that can cause leaf issues if you don't get it right. I have several strains that are slow growers or just more sensitive, like my hash plant and my sour diesel. I have to be more careful with those two strains and make sure I don't over water and/or over nute them. My other strains aren't as sensitive and can take plenty of water and nutes.

Nope I haven't. I did notice that in your pictures, they do look a little strange. But they appear a nice healthy dark green so I don't think it's anything to be concerned with. It could be a genetic feature if this plant too. And I think the difference in genetics also makes nutrient uptake a little different. I've noticed some bag strain phenos that take up tons of nutrients and some that just like plain water. This could be one of those things possibly.

It seems that most of the indica doms will take more nutrients without showing burn and the sativas are a lot more 'picky'. But these are just my observations. So elsewhere people may have had different results or maybe even opposite.

Have you tried researching past completed Durban Poison grows to see maybe if this is a characteristic of this specific strain?

I have not searched this site for a grow journal..but i will. I have googled for differrent nute regiments for the two kinds and came up empty.

I was hoping someone who gwows it would see the post. Or even someone with alot of experience growing both. I will add Durban Poison to thread title.

Yeah I would even go so far as to check the other mary cultivating forums as well. Google should help with that. It might be something that only shows up in x% of the durban poison strain as well so there might be only a small amount of people who have ever grown it that get this condition. But it's kinda hard to say at least point without digging a bunch to see if you can see other people have had this 'problem' if you will.

I don't think it's something to be really worried about, doesn't seem to be affecting growth or anything like that. I do however understand your desire to learn more about it. Knowledge is power I hope you find the knowledge you seek.

Thanks for the help

according to my books plants that get too much nitrogen but dont get burned can get that really really dark green coloring.

tburton is right. Nitrogen causes them to get dark green, but that's not really bad thing. Darker color == More light absortion. If the leaves are starting to wrinkle and feel crisp though, you are teetering on the edge of nutrient burn. You need to either find a happy medium for all the plants or run the sativas on a different strength formula.

whiteflour said:

tburton is right. Nitrogen causes them to get dark green, but that's not really bad thing. Darker color == More light absortion. If the leaves are starting to wrinkle and feel crisp though, you are teetering on the edge of nutrient burn. You need to either find a happy medium for all the plants or run the sativas on a different strength formula.

Click to expand...

Thats what im thinking too. My Papaya is screamming for N and its fuckin up the DP and the Jamaican bagseed i thought was a peice of shit, even though its some bad ass weed.