Haven't got a clue what's going on with the plant and I'm worried I've put in all this time for nothing.

They look good keep it going. Might want to add in a water condioner like fish sh!t( its a product made in maine mixes in your wzter) really helps develop your terps. Patience is my real advice watch as your trichomes develop they go clear to cloudy to amber. Check grow diary articles for a guide. All in all though bud you will get there great job.

First off, not bad for your first grow! My first grow looked like a twig with hairs on it 😂 That looks like typical nutrient deficiency. Like humans, plants also need certain nutrients and minerals to survive. Soil usually gets depletes of all its resources after about 4 weeks and you'll need to transplant them -hence why transplanting into bigger pots is a thing some growers do- or feed them with supplements. The main nutrients are Nitrogen (N), Phosphorus (P) and Potassium (K). Hence the N-P-K feeding schematic. Have a look into this before your next run! And please, start a diary with your next grow :)

Don't get down everyone runs into problems. Spend some time evaluating your grow. identity your strengths and weaknesses and spend some time researching things to help your next grow. Manage expectations no one in their 1st few grows ends up following and curring and drying anything relatively near some legit gas. Be thankful your learning in todays world with infinite growing information online and with some nice leds and not hps or florecent Keep tring garentee by your 4th or 5th grow you will have it in the

Never think of it as failure, learn from your mistakes, there is no shame in learning. Whayeveryone else said, she look hungry for some nutrient loving.

Way under fed, or incorrect feeding............basically starving. Had you asked this question 3 weeks ago when the symptoms probably first appeared, there may have been a chance to remedy the situation. As it is now, the window of recovery is almost closed. Without a diary and/or a lot more information about what you have or have not been doing, the answers can only be guesses. These plants need feeding with potassium and phosphorous, aka a P/K booster. They probably also needs some supplemental nitrogen............however, letting it get this bad before asking for help may be too late to really "fix" anything much.

I agree with AsNoriu, all of these are heavily underfed so they are missing the building blocks to properly form cannabinoids and terpenes.

Do you see differences from yellow to green ??? Think they are heavily underfed.