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Nutrients & Deficiencies

In a previous blog post I wrote about feeding Cannabis, sometimes even when you follow directions problems may arise with yours plants. This allows you to spot the issue and fix it.

A usual issue is yellowing of the leaves occurs in lower leaves this is a Nitrogen deficiency. They will turn soft, curl in or crinkle and eventually turn brown. When the plant doesn’t get enough nitrogen it will pull it from the lower leaves, causing them to yellow and die. It should only be the lower leaves if its the upper new growth that’s normal.

Nitrogen moves through out the plant as needed, when it is low leaves use it up in other parts of the plant that require it the most like new growth. The plant will push the nitrogen to these parts to help them with photosynthesis and keeping it green. It is normal for the plant to start yellowing in late flowering cycle. If it yellows in vegetative then you have a issue.

Solution: Feed the plant with a good nitrogen nutrient and adjust pH.  I recommend any complete nutrient should help. I use General Organics or Bat Guano for soil and for hydroponic I use General Hydroponics FloraGro or Advanced Nutrients pH Perfect. Also be sure to not over feed with Nitrogen because you will get toxicity and that shows when the leaves are very dark.

Issue: Edges appear brown or burnt, Pale, Brown spots, yellow spots, Dark or purple leaves, slow growth.


This is a Boron deficiency usually occurs in a dry environment or under watered. First sign will be thick grow tip or growth twisting or abnormal. yellow or brown spots will show and root growth will be slow.

Solution: Use a balanced nutrient and make sure your feeding regularly and that its not too dry in the growing room. Make sure your pH is adjusted correctly since Boron is used by the plant at a lower pH so when it rises the Boron isn’t available to the plant. Use a Hygrometer to test the humidity in the air if its too dry you may get a Boron deficiency.

Issue: Spotting/ mottling, dead spots, crinkling, stunned growth, curled tips, small or poorly formed new leaves, leaf die off, weak stems, weak or unhealthy roots.

This is a Calcium deficiency will show up in parts of the fan leaves that have been exposed to light or the newer growth.

Solution: Make sure your pH is correct after the calcium issue is corrected the damaged leaves will not return to normal but the new growth will show the correction. Cannabis plants usually can handle a high calcium add General organics Cal-Mg or Botanicare Cal-Mag Plus. You can also use Dolomite Lime it can be mixed into your soil add 6-7 teaspoons to one gallon of soil. You can also add crushed egg shells for another organic alternative.

Issue: Tips of leaves turn bright yellow or white, leaves turn dark with blue or yellow undertones, shiny or metallic sheen on leaves, Buds don’t ripen or mature very slowly, leaves feel stiff and bent under, wilting or drooping.

This is a Copper deficiency its usually from a pH issue so make sure that is correct and use the right nutrients and is also when the grower uses RO (Reverse Osmosis) water because that filtering process strips out some Copper. It also will happen if a plant is being over watered.

Solution: Don’t over water your plant and make sure the pH is at the right level. Use quality soil and nutrients made for Cannabis.

Issue: Newest leaves turn completely yellow and white. Usually shows in the center and outward on the leaves. Pale colored leaves, Slow growth, Buds not maturing.

This is usually a Iron Deficiency a solution:  Make sure your pH is correct feed with a nutrient containing iron, calcium, and magnesium.

Issue: Light green or yellow will show on the veins or edges of the leaves they may also be crisp to the touch. It usually appears on the lower part of the plant because the plant will pull Magnesium from the lower leaves.

This is Magnesium Deficiency and a solution: It can be treated by feeding a Magnesium supplement like Cal- Mg as mentioned above. Also again keeping the pH in check is a big importance.

Issue: Leaves turn yellow between vein areas and have brown mottled spots. The brown spots eventually spread and kill the leaf they may also shred and crumble apart. The yellowing will begin at the base of the leaf and move outward, overall plant growth is slow.

This is a Manganese deficiency  and a solution is to flush out the medium using pH’d water and a light nutrient that contains Manganese will correct this.

Issue: Pale and yellow leaves, brown an dark spots, Pink coloring and yellow, red around edges of leaves.

This is rare but it is molybdenum deficiency and a solution is to completely flush the plant and then add a nutrient that includes molybdenum and make sure the pH is set.

Issue: Edges appear brown on tips or dark leaves, dark patches on leaves, leaves will turn under and crack off.

This is Nutrient Burn and a solution is to completely flush the medium out with pH’d water use a flushing solution like Foxfarm sledgehammer Bushdoctor or flush with plain water.

Issue: Yellowing appears starting at tips of leaves and works inward then leaves will turn grey or brown and die off. They will also curl down and the stems will turn bright red or purplish.

This is Phosphorus deficiency a solution is to feed with a high phosphorus nutrient and adjust the pH Phosphorus is best absorbed by cannabis in soil at a root pH of 6.2 – 7.0. Phosphorus is best absorbed by cannabis in hydro at a root pH of 5.5 – 6.2. too wet or compact soil can trigger Phosphorus deficiency. Too low temperatures under 60 degrees Fahrenheit can also trigger it. Good sources of Phosphorus are: Bat Guano, Bone or Blood meal, Worm Castings or Worm tea, Fish meal, Bloom or Flowering nutrients. Make sure you make the Bat Guano and Bone/Blood Meal into a tea before applying it to the plant.

Issue: Leaves appear burnt or brown on edges and show yellowing or paleness, veins of leaves stay green, Brown or dark spots, Lower leaves affected.

This is a Potassium Deficiency a solution is again to flush the medium and feed with a potassium nutrient. Its also due to stressful conditions like heat, over watering, transplanting. Make sure the pH is correct when feeding and watering to assure proper uptake of nutrients.

Issue: Pale colored leaves, yellow leaves in new and old growth, yellowing between veins, red or pink color on stems, Buds not maturing properly.

This is Sulfur Deficiency and a solution is to check your pH to make sure sulfur isn’t being locked out.

Lastly is a Zinc Deficiency same with other issues pale leaves and spotting. A solution is to adjust the pH and make sure you feed with a balanced nutrient. Zinc deficiency is likely to appear when using RO water due to it being stripped from the water during the filtration process.

As with most of the issues pH is a important factor and feeding a well balanced line of nutrients to the plant. Also to prevent over feeding or nutrient burn its important to flush out ever 2 -3 weeks. Make sure your giving the plants good amounts of water without over watering. Humidity should be correct also to prevent issues. Daily care and spotting issues early is important for them to reach maximum potential.

Feeding Cannabis

When growing Cannabis it is important to feed it properly.
In vegetative it gets different types and amounts of nutrients then when in flowering. PH is also a important factor when giving nutrients because it will allow the plant to take up the nutrients properly when the PH is adjusted. NPK is the three main nutrients the plant will need during the growing cycle. These fit in the category macro nutrients.

Nitrogen (N) – Helps plants make the proteins they need to grow more tissue

Phosphorus (P) – Helps root growth and helps the plant bloom and flower. It improves plant strength also helps seeds grow bigger.

Potassium (K) – Helps all the functions of the plant to produce correctly.

When looking at a fertilizers content the three numbers show the amount inside the fertilizer so 10-10-10 is a even amount of all three nutrients. Each number is a percentage of what is in the nutrient mix so 10-20-10 would be 10% Nitrogen, 20% Phosphorus, and 10% Potassium. When Cannabis is in the vegetative stage it requires more nitrogen to form more leaves and grow quicker. While in Flowering (budding) stage it requires more Phosphorus.

Other nutrients are also required for better results some are below.

Calcium (Ca) –  Helps with heat stress and also the structure of the plant and leaves. Calcium deficiency will show in the leaves they will be dull in color starting on the ends also will show as brown spots or yellow. It usually appears in the fan leaves that are under the lights or it will show on new growth. Dolomite Lime  is a great calcium magnesium supplement add 6-7 teaspoons of fine dolomite lime to each gallon of soil. I also use CaMg+ from General Organics when I feed Calcium. Other signs of Calcium Deficiency are Crinkling, Spotting, mottling, small brown spots, small or stunned new leaves, curled tips, leafs die – off, dead spots, weak or brittle stems, Slow bud or leaf development. You can also get calcium from finely crushed egg shells.

Magnesium (Mg) – Is needed for photosynthesis its a part of the chlorophyll in all plants and helps activate the plants enzymes needed for growth.

Sulfur (S) – Has many uses in the plants growth one is that its essential for the production of proteins. It also improves root growth and seed production. Aids in the formation of chlorophyll and faster plant growth. helps protect plant in cold temperatures.

Next are the micro nutrients:

Boron (B) – Helps in the use and regulates nutrients also aids in the production of sugars and carbohydrates, aids in seed and fruit development.

Copper (Cu) – Helps in the utilization of proteins and aids in root metabolism. 

Chloride (Cl) – Aids in plant metabolism.

Iron (Fe) – Helps with formation of chlorophyll.

Manganese (Mn) – Involved in the aid of break down of carbohydrates and nitrogen metabolism.

Molybdenum (Mo) – Helps with the use of nitrogen.

Zinc (Zn) – Essential in the transformation of carbohydrates, regulates consumption of sugars part of the enzyme system that regulates the plants growth.

If a plant receives all the required nutrients it will produce better results and yield its important to not over feed but to give the plant what it needs in weekly doses and to also flush out excess built up nutrients every 2-3 weeks. All nutrients have a feeding schedule usually the manufacturer will have a feeding schedule that shows how much and when to use the nutrients. Read the label and follow how much it tells you to use per feeding each brand is different. Ruderalis Cannabis usually is half the recommended dose so be sure to only use half strength for the Dwarf auto flowering varieties. Keep your PH levels 6.5 for soil and ideally 5.7 for hydroponics but they can handle a range of 5.6-6.2 so be sure to measure that before you feed the plants so they can uptake all the nutrients. If you have any questions feel free to contact me thank you for reading hope you enjoy my blog.

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Cropping & LST

When growing in smaller areas like tents, its a good choice to crop or train your plant with LST to grow its maximum in the small space. Also if you want to max the yield getting more buds instead of a main branch.

I’m going to explain a easy way to do this now you want to wait at least till they are 6″ – 8″ in height is when I usually crop them. Your going to pinch off the grow tip just the top leaves that are growing out. In a few days it will regenerate and two new shoots will emerge. Do this again after they grow out some, soon you will have a branched out plant.

Once you have all the branches grown out you can train it to fill up and net by attaching the net (Trellis) https://www.hydrofarm.com/p/BCPSH16  https://www.hydrofarm.com/p/HGN15  https://www.hydrofarm.com/p/LHN010 to your tent poles a easy way is to use plastic zip ties. Once you have the net in place carefully push the branches through the holes in the net to fill up all the space. This will allow maximum light to reach all the buds on your branched out plants

You can also use garden ties https://www.hydrofarm.com/p/HGST to train your branches to spread out the way you’d like simply secure the wire around the main branch twist it around and up the branch and shape it the way you want it to go. If you need the branch to be pushed down use fish line and fishing weights and attach that to the branches to weight them down be careful to not break the branches although Cannabis stems are fairly strong, they may break if too much pressure is applied. I also sometimes use plastic zip ties to support the branches and spread them out so all are receiving a good amount of light.

If you have any questions please feel free to contact me. Thank you for reading and enjoy your gardening!

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Best Grow Tents

The best way to make sure your plants are protected from bugs,mold,dust, and outside temperatures and humidity is to grow in a tent or closed space I have a GrowLab GL60 http://www.homebox-growlab.net which is a awesome sturdy tent. I also have a larger HydroHut 2×2 http://hydrohuts.tumblr.com/ that is just as good as the GrowLab. Both have sturdy poles and connectors as well.

Its important that you use a grow tent to grow your plants because it makes it easier to protect against bugs and molds if your going to be smoking something grow or eating it you want to make sure its free of pests and mold which is harmful to your body also its easier to hang the lights and fans. Another good grow tent is Gorilla these are some of the strongest tents you can buy. Check out the sites and see for yourself http://shareasale.com/r.cfm?b=911832&u=1293991&m=31788&urllink=&afftrack=

Thank you for reading and have a great day! Happy Growing!

Growing Auto-flowering Ruderalis

Ruderalis is a shorter stocky plant that flowers on its own with the right amount of light I have grown many different kinds. It is one of the easiest varieties to grow and is great for beginners. The first thing to remember is it requires a longer light period to grow and mature properly so instead of a 12/12 hour light time it requires at least 18 hours of light a day I recommend 24 hours I know its not efficient to be running the lights all the time but you could use two different lights in the grow space and then have one going 12 and the other covering the other 12 hours and just hook them up to a timer. After 30 days on 18-24 hours of light you can switch back to 12 hours only thing is the yield will be less so its best to leave it at 18-24 hours of light. The Ruderalis will start to flower in about 15-30 days.

When using a soil I recommend a lighter soil so not too much nutrients you should be using half the strength of nutrients and take care in not over fertilizing the Ruderalis and again keep the PH at 6.5 in soil and 5.5-5.8 in hydroponic. Use the same kinds of nutrients you’d use in a Indica or Sativa just at half strength and same with watering.

You shouldn’t have to prune or pinch for the Ruderalis for it to branch out it does this on its own and if you pinch off the grow tip it might cause problems like slowed growth or it will die so I don’t recommend that. They will be ready to harvest anywhere from 65-110 days depending on the type also they can be about 1 -2.5 feet so they are perfect for small growing areas.

Flowering & Light Cycle

The amount of hours a plant receives per day will force it into flowering (budding) you can start the light at 18/6 or 24 hours for Cannabis Ruderalis (auto flowering) actually requires this period its whole life span, but regular Cannabis like Indica and Sativa varieties require in its vegetative stage 18/6 hours of light for at least 30 days till its big enough to force flower. Then for it to be forced to flower it requires 12/12 of light and dark period. It will start to flower in about a week. Each strain has a certain amount of weeks or days till it will be ready to harvest. I usually just judge that by 80% of the hairs (pistils) turning darker means its ready.

When growing a plant in vegetative stage a Blue spectrum is best (5,000 Kelvins) while in the flowering stage a Red Spectrum is required for robust flowering (2,000 Kelvins). You can also use a mixed Spectrum (3,500 Kelvins).

When growing Cannabis Ruderalis (auto flowering) you may cut back the light after 30 days down to 12/12 but this may make the yield smaller. It is best to keep it 18 hours of light or more a day. Most Cannabis Ruderalis is usually ready from 55-75 days from seed. Probably a good variety to start with for a novice grower.

Thank you for reading hope you enjoy my Blog.

Watering Cannabis

When starting seedlings in soil you should always spray the soil till its moist but not too wet. I would spray them at least 3 times a day depending on your grow area temperatures. As they get older about 6″ you can start watering them with a glass or watering container till it runs off and gets all the roots wet in the growing container, don’t over water because it will cause mildew and molds to form in the growing medium. As they reach adult stage you can water up to 2 cups per plant depending on your container size and room temperature. You can also build a automatic watering system with a water pump, a reservoir, some water line (I use 1/4″ water line) and some micro sprayers and a hydroponic timer for watering you can find all of these things on EBay or a local Garden or Hydroponics supply shop. I will show you how to make one in a later Blog post. I always use Reverse Osmosis water PH to 6.5 when I water plants in soil. Check the run off (draining water) and test it to make sure the PH is 6.5 inside the roots if not adjust to the proper PH. If your PH is not correct it will lock out nutrients the plant needs.

In Hydroponics its basically the same amounts of water make sure you use a big enough Reservoir to accommodate how many plants you have. If you have any questions feel free to post a comment and I will answer. Thank you for reading.

Temperature & Humidity

The temperature and humidity your keeping the plants in can make a huge impact on yields and plants growth rate also keeping molds and pests away from your Medicinal plants.

The ideal temperature should be 75°F (23.88°C) and should never be over 90°F (32.22°C) The ideal humidity should be at exactly 50% anything over or under causes pests and molds/mildew in your garden, a air conditioner or fans can keep the temperature and humidity at the proper levels, you will also see a faster growth in your plants if these levels are kept in the right range. Use a Hygrometer to measure the humidity in your grow room or grow area you can buy them from Ebay or a garden supply shop. I have a digital Temperature & Hygrometer I use in my grow tents. I also have a clip on 6″ fan and two 4″ inline duct fans (180 CFM) one blowing air in and the other exhausting air with a filter connected to it to pull out the dust and pathogens to make sure the air is clean inside the grow space use a fan controller to control the air flow of the exhaust fan. Plants have pores just like our skin does if these pores become clogged it can make the plant sick so its really important that you have plenty of air circulation in your grow space to keep your plants at their healthiest. I have my fans hooked up to a timer they are on when it gets too hot and shut off at night when its cooler always give the fans a break so they don’t burn out. I also recommend getting a grow Tent or if your growing indoors having a completely sealed space to keep out mold spores and pests.

Thank you for reading If you have any questions feel free to contact me.

Cannabis Strains & Reviews

Joint Doctors – Purple Ryder

Joint Doctors Purple Ryder Aka Purple Jems is one of my favorite Medical Marijuana strains. This auto flowering variety was developed by underground breeder Mossy. I always loved purple variety’s this is a easy to grow big yield Marijuana plant very fun to grow! The flavor is a floral sweet and is a relaxing mind easing medicine.

Breeder: Mossy

2013 Purple Ryder Flowering Cola


Genetics: Mazar X Lowryder F7
Variety: Ruderalis (autoflowering)
THC Content: Not known
Grows: Greenhouse, Grows indoors, Grows outdoors
Flowering Time: 7 weeks
Harvest Month: From July

Yield: 10g-50g depending on container size and growing methods

Medical Qualities: Pain relief, nausea, headaches, PTSD, Neurological problems, HIV/AIDS, Cancer, Works best for relaxation and stress.

This website displays my image and review of this plant. http://de.seedfinder.eu/strain-info/Purple_Jems/Joint_Doctor/gallery/19031387592260911/

Blackwater Kush

Blackwater Kush is a very relaxing medical cannabis it has a nice euphoric and body like effect. I recommend this for many medical aliments the bud itself looks very crystalline you can’t really see it in this photo but it is. I think this works great to prevent my seizures ( Car accident Skull fracture and Traumatic Brain Injury 1999) and also works well on pain in my knee and inflammation. I find it is also great for sleep issues and depression it lifts the spirits also helped my headaches. The flavors are a earthy sweet and pine mixed the smell is very organic grown and pleasant. It won the 2014 Los Angeles Cannabis Cup 3rd place in the indica category.

Breeder: The Cali Connection

Blackwater Kush


Genetics: Mendo Purps X San Fernando Valley OG Kush
Variety: Indica
THC Content: High about 19%
Grows: Greenhouse, Grows indoors, Grows outdoors
Flowering Time: 8 to 10 weeks
Harvest Month: Late October

Fruity Pebbles

First introduced in 2006 from dispensaries in California it quickly became a widely used strain. This is probably another one of my favorite strains its a great relaxing smooth smoke, smells floral and sweet with a touch of berry. Very Relaxing Happy & Euphoric, it really worked well for my inflammation and pain in my knee. It also made it easier for me to fall asleep, it has a really good body effect and relaxed me a great deal. Highly recommended for all Cannabis patients.

Breeder: Alien Genetics


Genetics: Green Ribbon X Granddaddy Purple X Tahoe OG X Alien Kush

Variety: Hybrid 55% Indica

THC Content: High 12.5% – 20%   CBD: About .19%

Grows: Greenhouse, Grows indoors, Outdoors

Flowering Time: Unknown

Harvest Month: Unknown

Green Crack

This is a very nice Cannabis the fragrance is like a berry, floral, citrus Earthy mixed. The effect is relaxing mind clearing and pretty strong helps with my pain and headaches also made my muscles relax after a workout I did today. It is also a nice smooth smoke that made me have more energy and helped calm stress. It gave me a pretty dry mouth though.

Breeder: CecilC



Genetics:  Skunk #1 X Afghani Strain (75%)
Variety: 75% Indica / 25% Sativa
THC Content: 13%-21%
Grows: Greenhouse, Grows indoors, Grows outdoors in Soil is preferred likes indoors best.
Flowering Time: 53 days
Harvest Month: Any

Jack Herer

I like this one a lot smells so nice and the effects are great! the smell is like a spicy pine with a touch of earthy. It is a Sativa dominant variety made by Sensi Seeds. It was created in the Netherlands in the mid 1900’s and named from the marijuana activist and author of The Emperor Wears No Clothes then later introduced to Dutch Pharmacies and distributed as a recognized medical-grade strain. It also has taken home numerous awards for its quality and potency. It seems to help a great deal with my Knee Pains and inflammation it also makes me feel energetic and happy. I highly recommend this one to any Cannabis patient.

Breeder: Sensi Seeds

Jack Herer


Genetics: Combining a Haze hybrid with a Northern Lights #5 and Shiva Skunk cross.

Variety: 55% Sativa

THC Content: 18-23%   CBD: 0.03%-0.2%

Grows: Greenhouse, Grows indoors, Likes a dry outdoor climate.

Flowering Time: 50-70 days indoors, 60 days outdoors.

Harvest Month: Fall months



OG Kush

I really love this variety it is a strong one and really eases me I noticed it works well for my knee pains. Seemed to make me more talkative and out going. I got pretty bad cotton mouth. It has a great earthy pine smell and slight lemon. It is very relaxing, a good one for stress as well. The Buds were nice big and dense.


Genetics: Chemdog Hindu Kush

Variety: Sativa and Indica but its hard to say unknown.

THC Content: 19-26 %    CBD: 0-0.3%

Grows: Greenhouse, Grows indoors

Flowering Time: 7-9 weeks

Harvest Month: Any



Purple Urkle

This is one of my favorite has a nice sweet berry or like a grape flavor and smell with a light skunk in back round. It relaxes me and helps me fall asleep it is also great for my pain relief and is deeply relaxing. This strain also originates in California and is said to be part Granddaddy Purple or Mendocino Purps. I would definitely recommend this one to anyone.

Breeder: Unknown


Variety: Mostly Indica

THC Content: moderate   CBD: high

Grows: Greenhouse, Grows indoors

Flowering Time: 8-9 weeks

Harvest Month: Any