Common Marijuana Plant Growing Problems

Common Marijuana Plant Problems

TIP #8

Are your marijuana plants showing signs of problems?  Discoloration, blotches, drying up, and wilting are just some of the ways the leaves of a marijuana plant will let you know something is wrong.  They are not as happy as they would like to be.  Stressing the marijuana plant can lead to low yield or even its demise.  First rule out these things:

  • Plants have plenty of water
  • PH is 5.6 – 5.9
  • Your light cycles are correct
  • Your medium is not saturated
  • Constant fresh air

With the above ruled out, use the below to help diagnose your plants problem!

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Marijuana Hydroponic Ebb and Flow Table #2

Here we are approximately 14 days after the marijuana clones were transferred to the 6″ rockwool cubes and placed in the hydroponic table.  These plants have grown significantly since the last post.   I’ve also posted some pics of the individual strains so you can see the different phenotypes(characteristics).  Be sure to click on the “MORE” link to read the complete details.

Since the last post i have attached my exhaust fan to the 1000 watt HPS light and attached to the same timer as the ballast.  It will now vent whenever the light is on removing unwanted heat from the growspace.  Its cold at the moment so i’m using this heat source to warm the reservoir and the room.  I only do this in the cold winter months(Dec, Jan)as it works great for my particular room.  The rest of the year the light is vented with air separate from the grow room.  It never mixes so no smells will permeate.  You must learn to keep your growing environment at or as close to your desirable growing temps.  74 is a good rule of thumb.  60′s to get those purple phenotypes really showing.  Simple changes can make degrees of difference.  I’ll plug some tips regarding this.

After the room was setup and prepared, I pre-soaked the 6″ rockwool cubes in the tub and swished them around a bit to remove a lot of the loose debris.  Next I fit the 2″ clone cubes into the larger cubes. Just cut as needed.  Now just place them in the tray.

And now 13 days later we’re pretty much up to date.  Sometime within the next week I’ll check to see if we’ve got the growth for cloning.  As for now they are really taking off and i do not want to stress them.  They are exhibiting fast growth now due to the roots establishing and they are no longer stressed from the move and new growing climate.  These girls are happy once again, and it shows.  I tested the PH regularly in the first couple days.  Adding PH down when necessary.  It is a tedious task at first.  It seems all brands of PH down act much different so its a trial and error, “wing’n it”, sort of thing.  Just add the PH down slowly and when you get close, whether over or under,stop and let it mix well.  After a few hours check it again.  Eventually it will balance somewhat and you will not have such drastic swings.  Keep that PH as close to 5.8 as possible.  For every point there is a 10 x  swing in acidity.  You can see why 4.3 one day and 8.4 the next really stresses the marijuana plants.  A digital PH meter here is highly recommended.  Point and click.  I am feeding 600ppm currently and will bump it to 900ppm next week.  I’ve set the table to flood twice daily or every 12 hours how ever you want to look at it.  Next week i’ll change to every 6 hours.  Temps are 78 with no A/C with the light on and i’m heating with a thermostat adjusted ceramic heater set at 72 lights off.  When the weather warms up I’ll need to kick the Air Conditioner on thermostat full time and the heater most definitely removed.   Hmmmmm….what else.  Oh….i have a couple smaller submersible pumps in the reservoir that run non stop.  i have them pointed in opposite directions generating a kind of “eddy” or “whirl pool” effect.  This is keep the nutrients from settling to the bottom as well as keep the water moving and oxygenated. I also have replaced the canister in my automatic pesticide releaser thingy.  Its like those commercial fragrance dispensers you see in public restrooms.  You can also get flying insect bug killer refills for those in some hardware stores.  For some reason i only have luck finding them at ACE hardware’s.

ClickMORE” to see the four MEDICINAL MARIJUANA STRAINS UP CLOSE

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Marijuana Hydroponic Ebb and Flow Table

Ok, its time to grow out a medicinal marijuana grow.  Here you are invited to follow along and ask questions whenever necessary.  I’ll cover how this particular hydroponic system works and post some pics to help you understand.  We’ll also follow the grow through to harvest.

Before getting started with any grow its important to CLEAN your grow space.  Bugs and fungus are of major concern.  In between each grow it is important to completely sterilize or at least to the best of your ability sterilize as much of your grow space as possible.

After i complete a grow i like to bomb my space with some of those bug bomb(spray cans) and let them sit a day or so.  You’d be surprised what crawls from the cracks and dies on your floor.  This stuff is flammable and if you have a perfect grow room like i have, it can be very dangerous.  Vent the room well  prior to spending any length of time in there.  Let me back up here for a second.  When i say i have a “PERFECT” grow room, i am referring to the style of grow room.  Many growers will vent their grow rooms allowing for huge amounts of air to be exchanged. Although that is a great way to grow, there are some increased risks associated. A grower should consider the pros and cons of each prior to setting up there operation.

In a “PERFECT” grow room you try to provide the perfect environment for the plants but in an air tight space.  No air is being displaced by exhaust but rather filtered to remove smell and CO2 is provided via either bottle or burner in a regulated manner.  My room is very tight and little air escapes keeping smells contained.  Although i highly recommend this way to grow, especially in urban areas, they require a bit more attention to safety and do have some added cost.  Cleanliness is key however you choose to grow.

Today i spent a better part of my afternoon removing the flood tray and reservoir along with whatever else was in my way.  When i had my grow room pretty empty i swept, vacuumed, and mixed a hot batch of bleach and water. Next I mopped down my walls and floors.  I scrubbed my reservoir and tray and then put them back.  Here is where we begin. ( i still have assembly to follow…i’m a lazy stoner : )

I was going to be using some clones from Nirvana’s Purple Power strain.  That plan has unraveled as the friend who would have supplied them has gone A.W.O.L.  After waiting a few extra days and no returned calls……Were moving on.

The clones above are G13, Strawberry Cough x Deep Chunk, Black Domina and Purple Kush.  These are all very killer strains.  Great for different ailments and the Strawberry cough is kinda a connoisseur’s strain.  Its not a high yield er so its kind of like the “Special” stash for when your really feel’n it.

We’ll be taking these strains and growing them out.  We’ll also be taking clones.  I’ll use some to establish mothers to keep the perpetual grow goin and to cover all the basics.

How the Ebb and Flow (Flood and Drain) System works:

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The difference between Indica vs Sativa – Marijuana Leaf Example

Indica vs Sativa Cont’d….

Sativas are opposite of Indicas. They are taller, thinner plants, with much narrower leaves. They tend to grow a lighter green in color. They grow very quickly and its not uncommon for them to reach heights of 16 feet in a single growing season! In optimum growing [...]

The difference between Indica vs Sativa – Marijuana Leaf Example

We all know there’s different strains of weed. Marijuana breeders will cross breed different plants for prefered characteristics known as phenotypes. A phenotype is the observable, qualifyable, quantifiable representation of a trait. There happen to be two distinct traits known as Indica dominant and Sativa dominant. This does not necessarily mean that there are only two types of plant genes or species or whatever. There is actually a wide array of phenotypes found throughout the plants and their leaves. Skinnier Sativa like class, thick Indica type class, and many less subtle phenotypes between the two.  Curly, pointy, fat skinny, color, shape, etc. see where this is going? and it just keeps going. So when you see a “strain” of marijuana, you are basically looking at a particular plant that a marijuana breeder has created to display certain traits.

We’ll get into these phenotypes and the different examples a bit later. First lets explore the main differences between the two most frequently found and easily identifiable types. Cannabis Indica and Cannabis Sativa.

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Lets grow marijuana, first lesson you need to know

Your finally ready to grow your own marijuana huh?  Good decision.  Your going to love smoking your own bud.  There’s lots of advantages to growing your own marijuana, like knowing what your inhaling, having cash in your wallet again,  and choice of strains to smoke.  That’s always nice! Your going to [...]