Could use some help growing a monocotyl.

[felinlasv]

Hi,

 

I'm growing a monocotyl with a life cycle of only one year, because I have to collect all sorts of different plants (leaves+flowers) over a two year period for a college-assignement. I've been growing it for two months now, after the first month I placed it in a bigger pot that had a different kind of soil in it. Eversince it has gone wrong. The plant virtually stopped growing and is in an worse condition now then a month ago. I've checked almost every possible cause.. Where I live it also grow's in the wild but is very rare (that's why I am growing it myself) so I've been growing it in the same conditions as it's natural habitat (light,water,temperature). This points out that there's something 'wrong' with the soil. The quantity of soil is big enough for it's roots to expand. After a month and a half I added some fertilizer, but this didn't do the job. I think it has something to do with the pH of the soil,the leaves are turning brown (starting with the ends and edges) and die (to acid?), the strange thing is that the young leaves die before the old ones. This has nothing to do with a lack of water since I've tried adding more without any positive result. Does anybody knows what's wrong and how I can change it before it's too late?

[Hades]

what kind of plant are u attempting to grow? I am certain this problem is due to the pH of the soil. While growing pea plants for some experiments of my own, i saw that they were the only species of plant not responding well to their conditions. After varying the temp, waterings and amount of light, i concluded this was a result of the soil they were planted in. A quick change to a different soil brought them back to par.

[Glider]

Can't really help without further information:

 

What plant are you trying to grow?

Where are you trying to grow it (indoors or out?)

What soil was it in?

What soil did you pot it into?

What feed are you using?

[Radical Edward]

mod note: I edited the thread title to make it more informative.

[felinlasv]

I am growing a species related to cannabis sativa, it's an altered species, not the geneticly engineerd kind they grow to produce THC. Mine almost doesn't produce any THC (that's why I have permission to grow it).

 

I've been growing it inside behind a window that gets direct sunlight almost the entire day. I originally planted it in a soil-mixture for young plants and then transferred it to soil. I'll try to translate exactly what it said: 'soil for slow-growing flowerplants'. Don't know if you can make up anything about that, but my guess was that it might have been pretreated with certain planthormones.

 

I used an ordinary fertilizer with this combination: N(7)-P(5)-K(5)

 

I hope all of this is usefull, let me know if you figure out anything

[Glider]

Hemp plants (and relatives) are annuals. As such, they don't really like their roots being messed with once they've put out their second set of leaves. Perennials are more robust.

 

However, consider the situation. The temperature in direct sunlight on the inside of a window is going to be a lot higher than in direct sun outside. Plus, there will be minimal air movement, and probably a lot lower humidity. In order to thrive, plant of that family like free-draining, poor(ish) soils. They like direct sun, but also moving air.

 

My advice; make sure the soil is free draining. Don't water too much (wait until the soil has started to dry out before watering. Aim to keep the soil damp, not wet). Don't feed it too much. If you are using a chemical fertilizer, you could dilute it to half the recommended strength.

 

Put the plant outdoors. If it's not already dead, it should pick up after 5-7 days outside, in a spot that recieves plenty of light, but is sheltered from wind.

[felinlasv]

Thanks a lot. I'll definitely try your advice if it's not too late already. Anway if it doesn't work out I'm going to try again next year and get some decent stuff to work with.

[Glider]

Good luck with it.