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PGR Weed: Your Guide To Toxic Marijuana?

PGR Weed: Your Guide To Toxic Marijuana?

Cannabis (weed, marijuana, etc.) and plant growth regulators (PGR) are in the spotlight due to their potentially harmful effects on human consumption in Australia. PGR nutrients may produce harmful chemicals in your weed.

Plant Growth Regulators (PGR) and their use in growing cannabis in Australia is a hot topic. They are the reason the weed you by is rock solid and a bit off-colour. But why is PGR bad for marijuana cultivation and harmful to smoke or vape?

More Australians are becoming aware of the dangers behind PGR chemical nutrients and how PGR weed can cause permanent damage when inhaled or consumed. PGR nutrients are used to boost the growth of grass on your lawn chemically. So there’s no surprise that using the same chemical nutrients on marijuana plants will lead to some dangerous results.

PGR weed has flooded Australia’s recreational weed market, and it’s so bad that people have forgotten what natural weed tastes like. One trip over to North America will open your eyes to the wonders of natural weed with no dangerous PGR chemicals.

We are covering a few main points around PGR weed and all general things Plant Growth Regulating (PGR) with Cannabis in Australia!

Table of Contents.

What Is PGR Weed, Marijuana or Cannabis?

Close-up of high-quality natural weed
Close-up of high-quality natural weed

PGRs are a synthetic form of natural Plant Growth Hormones that induces growth of shoots and roots, extends the life of the plant, speeds up germination, and triggers flowering.

In theory, they are a great idea to efficiently grow marijuana, but in reality, the buds are toxic and harmful to smoke.

They have legitimate uses with hedges and grass as it accelerates the growth of plants, but have too many negative effects when consumed.

Australia’s drug market is flooded with rock-hard PGR weed that has low THC content and high chemical content. It’s not uncommon for smokers to prefer PGR weed as they get a chemical high from it.

Growing with cannabis with PGR allows you to germinate faster, stimulating the growth and triggering the flowering. The result is a faster-growing cannabis plant that produces heavier bud that is low in THC and laced with chemicals.

We strongly recommend against PGR as it might not be as harmful in the short-term, but in the long-term, it can cause infertility, chest and breathing pains, cancer, and more.

PGR weed still exists in Australia because it produces larger weed flowers faster, but the result isn’t a great product. Since PGR weed is the standard in Australia, most people don’t realise that natural marijuana is any different.

How To Tell If Your Weed Bud Is Laced With PGR

How To Spot PGR Laced Marijuana
How To Spot PGR Laced Marijuana

There are more ways than one to tell if you have PGR weed. We will cover a few of the main telltale signs of PGR laced marijuana, and also provide images to compare.

The obvious signs of PGR weed are:

  • Rock hard dense bud
  • Red hairs
  • Little to no crystals
  • Weak smell
  • Harsh chemical taste
  • Fast-acting chemical high that can cause a headache and a lethargic high
The difference between PGR bud and non-PGR bud
The difference between PGR bud and non-PGR bud

These signs of PGR weed vary, but the most apparent visual is its density. The PGR grown cannabis plants produce dense weed that’s heavier and more profitable when selling by weight.

Are PGRs In Marijuana, Harmful & Dangerous? Can PGR Weed Kill You?

Is PGR Cannabis Harmful?
Is PGR Cannabis Harmful?

Since the 1980s, there has been evidence that PGRs can cause liver damage, infertility, and cancer when PGR agricultural products are consumed.

That’s not to say that PGRs are bad and should be outright banned, but they should not be used in plants that are going to be consumed or have their extracts used on humans.

For the legitimate cannabis cultivation industry, such as MEDIFARM’s cannabis facility in Queensland, they follow strict cultivation guidelines to make medical marijuana products safe for consumption.

You should not smoke, vape, eat, or drink any form of cannabis grown with PGRS due to their toxicity and harmful effects. There is evidence that shows PGR chemicals in marijuana can cause serious harm.

It might not kill you overnight, but it can certainly cause permanent damage to your body.

Does PGR Weed Get You High?

Do PGRs Get You High?
Do PGRs Get You High?

Now we know what PGR laced cannabis is, will it get you high, or is it as good as smoking oregano?

PGR weed does get you high, but it is not the same high as pure cannabis. PGR marijuana has an almost instant chemical high that can be addictive.

The effects of growing cannabis with PGR reduce the THC potency in the flowers, but this may go unnoticed as the chemical high can replace some of the THC high effects.

Higher THC content gets you higher, and any kind of chemical high that you get from PGR cannabis is not a healthy or natural one.

PGR VS NO PGR: The Difference Between Chemical and Natural Marijuana

PGR Weed VS Natural Marijuana
PGR Weed VS Natural Marijuana

Naturally grown weed has high THC and CBD contents. They have a softer and fluffy feel to them and a strong “dank” smell emitting from the bud.

For natural or organic weed, you cannot use pesticides or plant growth regulators (PGR).

The high from this natural weed will have more prolonged effects and more medicinal benefits than any PGR laced bud.

PGR weed has lower THC and CBD contents. They have a harder and more dense feel to them and emit little to no smell.

They generally have a reddish-brown colour and minimal visible crystals. The high effects hit you hard with a chemical high that can lead to headaches soon after smoking or vaping.

When it comes to PGR weed vs natural marijuana, the latter wins every time. You will never find PGR weed in Europe or Canada, but unfortunately its everywhere in Australia as its cheap to produce.

The Five Groups Of PGRs Used On Cannabis Plants

The Different Kinds Of PGRs
The Different Kinds Of PGRs

When it comes to PGRs, there is more than one kind that can be used to enhance the growing process of cannabis.

Each PGR type has a purpose, and these include:

  • speeding up the cannabis seed germination process
  • growing shoots and roots
  • triggering cannabis flowering
  • extending the plant’s life

There are many more effects of PGRs they have a focus on the manipulating the plant’s growth, ripening, and longevity.

PGR Weed Nutrients

The idea behind PGR nutrients is to boost the growth of the plant using synthetic hormones. This sounds like a great idea until you see, smell and taste the final product.

Unfortunately, lacing your marijuana plants with PGR results in the dried flower (bud) with a nasty chemical taste. These chemicals can be harmful when consumed or smoked.

The PGR Nutriends used on marijuana plants artificially stimulates the plant to grow, to flower and overall produce higher yields. The negatives when using PGR weed nutrients include:

  • lower CBD and THC content in the marijuana flower
  • harmful chemical high
  • reduced terpenes and other natural cannabinoids

So if you are looking to use PGR nutrients to boost your weed crop, think twice, as this may produce harmful marijuana buds.

The Research, Science & Evidence

The effects of plant growth regulators on basic cannabinoids in the cannabis Sativa plant (VA Serkov, MV Danilov, 2018).

The effects of different combinations of plant growth regulators when growing cannabis (PSU EDU).

The use of plant growth regulators (GA3, Zeatin, and IAA) when cultivating cannabis Sativa (international journal of phytoremediation, 2015)

The separate application of plant growth regulators in combinations to determine the sex expression in male and female cannabis plants (Societatis Botanicorum).

The modern determination of using pesticides and plant growth regulators in cannabis cultivation (Journal of toxicology, 2013).

Improving the frequency of plant regeneration in cannabis-using plant growth regulators..

The transformation of hemp (Cannabis Sativa) when introduced to a combination of plant growth regulators (Developmental Biology, 2003)..

Shoot regeneration in cannabis Sativa plants when using plant growth regulators (Aromatic Plants, 2016).

The assessment of the cannabis Sativa plants’ generic stability after the introduction of plant growth regulators in the cultivation process (Planta Medica, 2010).


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