Playing this content in my backyard so my plants can listen to it too.

No bongs,no stupid music, just real education great video 🤘🏼 life's a garden dig it 🤠

This never gets old. Thank you a million times Harley!

best horticulture lectures on youtube period! Thanks so much to Harley Smith for producing and sharing these easy to follow, educational videos!

I've taken a lot of classes, read tons of books and everything else and Harley makes everything simple, easy to understand for everyone, and then explains how you can actually make real changes to fix a plant's issues to grow amazing plants. Thank You Harley & NPK for giving people the control over their plants and educating us all in how to be experts.

In my opinion Harley Smith is by far the most knowledgeable speaker about plant growth and biology I've seen so far. Keep up the great work! Never lose that passion.

How nice it is to see such a capable and passionate person explain a subject with such wisdom and commendable disinterest. When this happens is when I think how lucky I was to take English language classes. This brings me closer to the knowledge and to enjoy a real lesson in Agronomy. From my beloved land of Argentina, I stand up to applaud you master.

You are what they call "Gold" in the grower community!. .Thank you!

I just ordered your whole line of products Harley. Your videos are on speakers in my house on loop daily lol. For so long I've been annoyed with nutrient companies because of the fact that we don't have control of the multiple ingredients/macro micro nutes that they load into there products. Im hoping to have a more tactical and direct way of feeding with your products. They'll be here in 2 days. Keep it up Harley and NPK, we're watching

Over the years I have seen and heard of many persons claiming to be so called ''plant doctors'' but for Harley this title is well deserved in my opinion, he is absolutely in a class of his own. Thank you so much for sharing your knowledge you are a 1st class lecturer.

Harley Smith is my new hero! I really like how excited he gets teaching about plant anatomy and nutrients. You can see he enjoys teaching and it makes me pay attention. Thanks Harley, for all you do.

I've taken some of Harleys classes he is the best and he really knows his stuff. He is taught me so much about the elements that I am getting explosive plant growth in everything I do and now I can almost immediately diagnose what each type of plant wants or likes. NPK makes excellent products too, they're very concentrated and a little package will probably last you years. You can tweak things at specific times of grow or bloom and what they are is the raw materials every major fertilizer company's fertilizers. Except they're in the most valuable dissolvable form and top-notch. I like them so much I become a dealer. And yes this does apply to the marijuana cannabis industry as well. Many people want to know that because they are growing their own medicines and want good production and the highest quality. Harley can definitely teach you everything about quality. I'd rate him as probably one of the best plant biologists in the world, and he's been all over the world. I periodically come back to his videos to refresh my experience so I don't forget things. Sometimes it does take a while to absorb but if you do it over and over again you'll get it and you'll be glad you did. Thanks Harley and thanks NPK for this video. You guys rock. Robert Sandera

This was one of the most informative plant videos I ever came across

what a nice lad! perfect explanation of the matter. Harley Smith: thank you sir!

Harley is the GOAT we are all in your debt sir Thank you for your time and knowledge

Awesome video! Trying to get into a little gardening armed with years-old animal/human physiology background, but very little plant physio knowledge. Video was very helpful. Thank you.

just an,awesome video Harley. I just love ur passion. it feeds mine and I love the way u teach. very understandable

Man thanks so much for this and all your videos! This video has increased my understanding of how everything works and has brought all the scattered information I've learned full circle! You have a great way of teaching and making these things understandable, thanks again.

Thanks Harley your videos are full of valuable knowledge. Its great you do this for free an no gain, teaching us information its taken you years to research. Ive watched 4 or 5 seminars from you and have learnt lots of valuable information I'll implement into my hobby. So I thank you for your effort and time.

Your energy is mobilizing even more than plant nutrient an mineral transport! Subscribed!!

Excellent video explaining the NPK and what the relationship is between the various elements and the plants.

Always keep coming back to learn, and refresh on all things N-P-K! Micro and Macro nutrients always important to remember!

You're the best Harley. Thank you. I agree with your philosophy of free information. Love the physiology.

Thank you very much for share and teach. I has a long time waiting for informations like this. Continue please thank you

The best content I ever seen about plants nutrition. And I was reading/seeing ton of stuff. Thanks for informations!

hey man im from the uk and much say i love this channel ive gained so much knowledge thanks for devoting time into doing what you do

Harley is definitely one of the best teachers I love his voice and enthusiasm about what he is talking about

Thank you for sharing your wisdom. It is greatly appreciated.

You provide high quality education 👌 .. Thank you so much for the science.. simply the best source I have come across in all my reasearch. University quality !! Cant thank you enough for this learning . 🙏

Lord yhour lectures are hard work. I have spent hours, for four mornings getting the last one under my belt.

These lessons are an absolute gold mine, no longer wasting my time on all the other KZfaq hacks.....Thanks!

Such a wealth of knowledge being shared thank you for these video's they have been really helpful and the way you explain everything has been real easy and fun to learn from you. I have been using the florescent 6500k and that has really kept the plants from stretching during veg that really helps when growing indoors. Thank you for sharing

The ppl that disliked this video must be upset he's sharing the knowledge. Thanks for explaining it simply.

Hi Harley, this is an excellent and expert coverage of the subject area.

just ran across your YOuTube - NPK University. GREAT!!!

Amazing lesson. I love real agriculture. I love to learn how plants and soil works. Thank you

Thank u The information about when too add phosphorus and when too add potassium was priceless

Thanks for the upload, I'm a big fan of Harley.

I'm naming my first cross after you Harley OG. Much respect, my man!

I have watched this video probably 200 times (yeah....I ain't got shit to do but watch plants grow). I always catch something new almost each time I re-watch Harley Smith videos. Today I learned "I NEED TO BACK OF THE POTASSIUM!"(29:48). I frequently have an issue with just a few leaves turn yellow here and there during heavy flowering and I thought it was a Mg deficiency. I now think it's the extra Bloom, PK Boost, and added NPK RAW Potassium I'm feeding my plants during flowering that is giving me a potassium toxicity.

Absolutely brilliant. Thank you so, so much for making this information available.

Wow I should have went to bed hours ago but stumbled across these dope videos and I'm on a marathon. Thanks! What a fricking badass 👍

you are a great instructor, i'de bet your garden is magnificent

Thank you Harley most of you information is good to aply in the crop, succes to everyone!!!

I am so glad I found your channel. I would like to hear your opinion on attapulgite and zeolites, keep the good work

If there was teacher like you Harley-Smith at the school and even at the church we would we will be the best of the best growing human. Period.

Thank you harley for your information

대단히 유용한 강의, 감사합니다.

wonderful presentation, thank you very much!

Recently came across your videos! Thank you for these videos.

They may NEED 17 but will thrive with far far more :) nice work as always ;)

Thanks mr.harley happy holidays!

1st video ive watched on your channel. Really quality info, subbed. Expanding on my comment here towards the end of the video... you sir are the plant messiah, wife learning horticulture and loving the info, myself growing too am a big fan 9f your knowledge. Excellent

Love this stuff. Harley Smith doing god's work!

What’s a great teacher Harley is!!! Does anyone know if he is still has his online class??

Thank you for this science-based information. ❤

We need more people like you much love✌️ Harley Smith

Thank you for sharing your wisdom, your dedication, and intelligence. Question: What is a proper PPM of Phosphorous for germination? I'm attempting to mix my own germination formula to increase germination time, I also scarify my seeds, so any information would be helpful thanks.

You are such a nice man Sir ! Thank You a lot for all of Your knowledge!

Thanks Harley.... this is awesome video very easy to understand how plant anatomy and nutrient amandment. I'd love to share this chanel to our group of Indonesian farmer.

Thank you for your efforts, really appreciate it 🙏 God bless

Very informative best videos I seen yet on the subject good job Thank you ✌️

Probably the 5th time I have listened to this one. Very informative

I have & use ALL the RAW/NPK products ( single elements & all in 1's) + ( grow/bloom microbes) use for all my indoor grows, very potent & you can use so many ways for Tea's, foliars, soil/coco coir drench. outdoor grows i use Down to Earth dry amendments but still make a tea or foliars = kelp, humic acid, compost or worm castings, for seedlings Vita-b very small kelp+ phos+ rhizo's roots love it. HIGHLY recommend using RAW/NPK products to any grower. Amazing products

The best I’m listening to so far……Outstanding

Fantastic video. Slowly becoming a better soil/hydro grower. No more planting then fertilizing willy nilly.

Amazing video and knowledge ! Thank you so much for sharing!

Mr. Harley N. Smith Gratitude

Thank god bless this man for sharing this knowledge

Wonderful presentation, nicely covered crop physiology 👍👍👍

just bought the raw line. love the videos Harley

Just subbed I love the willingness to teach

This is an amazing video. So much good information. Did he stop making videos 😕??

It is so much better to hear this from someone who is not stoned. Thank you.

Many thanks for all of your valuable information. Is there an organic way to add boron for my trees?

Great lecture, knowledge bubbling up, pls give ur link your for you more vedio.

thanks Harley. you are the best

Very informative. Thank you for posting

I'd love to see the lecture covering light spectrum specifically.

Thank you very much professor. Greetings from Cusco city (Peru).

Harley, hey King thanks for sharing such valuable Data wishing you well

Best video on plant nutrients

This was both informative and lit. Thank you.

i love botanists... they are (all of them i think) so passionate and flaming when it comes to plants :D nice ppl

England says High.Thanks for the lectures.Just watched the one with the info and Amino Acids.I got a bottle of the new Amino Treament from House and Garden,the Dutch Nutrient Company although I mostly use Advanced.Their Roots XL is a product Iv used for a number of years with amazing results.Matey who owns Advanced Nutrients has done a YT post raving about it saying its better than his rooting products.Says an awful lot.

if all teachers were like this wed be smarter all together lol thanks for the info I'm new to this but with info like this, things should go well

Great class !

❤❤❤ wonderful information. Thank you Harley for sharing.

thank you for the videos, i enjoy watching all that you make!

great videos. thank you so much for these videos.

AWESOME! Ive been growing for years and learned more here than i have anywhere else.

Very interesting and educative video.... Thank lots Sir...

hands down best video on you tube

that was an eye opener thank you so much

You have an answer for everything so much knowledge but yet not smart enough to have all your videos transcribe and put it up for sale❤

Thanks brother very informative!!! Loving your channel😍😍😍👍👍✌✌💖

Thank you for the Education.

We grow corn in the Texas Panhandle. When we first started growing corn after getting my Soil Science degree in the 1960', we were planting after the last frost in April. The experts from the Midwest were giving us bad information. What you said is factual because now we plant around June and make much more yield with shorter season corn and less water per bushels. We are now producing large field average of 17,000 lbs of grain corn per acre beyond what the Midwest can do because of our light spectrum through the season.

this guy is absolutly great

I wish I could give this 10 thumbs up! Thank you.