Pure Agar Agar Powder for Mushroom Cultivation – 1 lb Bulk Bag
Why Choose Our Agar Powder?
- Pure Agar Powder – No nutrients, sugars, colors, or premixed ingredients added. Start with a clean base and build your media exactly the way you want it.
- Reliable, Consistent Set – Produces a firm, stable surface ideal for culture work, transfers, isolation, cloning, and general mycology use.
- Bulk 1 lb Bag – Approximately 454 grams of agar powder for hobby growers, home labs, and anyone making media regularly.
- Complete Recipe Control – Pair it with light malt extract, yeast extract, peptone, potato dextrose, sorghum syrup, or your preferred nutrient source.
- Resealable Packaging – Helps protect your agar from moisture and makes storage easy between batches.
At a common usage rate of 20 grams of agar per 1,000 mL of water, one 1 lb bag can prepare approximately 22.7 liters of agar media.
Pouring approximately 20 mL per plate, that's enough agar for roughly 1,100 standard Petri dishes.
Actual yield will vary depending on your recipe, desired firmness, and pour volume.
Quick Agar Mixing Guide
| Water | Agar Powder |
|---|---|
| 500 mL | 10 g |
| 1,000 mL | 20 g |
| 2,000 mL | 40 g |
| 4,000 mL | 80 g |
Tip: 20 g per liter is a great starting point, but agar concentration can be adjusted slightly depending on the firmness you prefer and the ingredients used in your recipe.
Make the Media That Works for You
Agar is the solidifying agent that gives mushroom culture media its structure. Pure agar provides little meaningful nutrition on its own, allowing you to choose the nutrient source and concentration that best fits your culture work.
Common media types include:
- MEA – Malt Extract Agar
- MYA – Malt & Yeast Agar
- MYPA – Malt, Yeast & Peptone Agar
- SYA – Sorghum Yeast Agar
- Low Nutrient Agar – Reduced nutrient media for specialized culture work
- Water Agar – Agar and water without an added nutrient source
Simple Starter Recipes
New to mixing your own media? These simple recipes are a great place to start and can be adjusted as you dial in what works best for your cultures.
20 g agar powder
14–15 g light malt extract
20 g agar powder
13–15 g light malt extract
1 g yeast extract
20 g agar powder
No added nutrients
These recipes are starting points, not hard rules. Nutrient concentration and agar firmness can be adjusted depending on your goals and preferences.
Choose Pure Agar Powder if you want complete control over your media recipe. Add your own nutrient sources, adjust concentrations, and create media specifically for your culture work.
Choose Agar Pre-Mix if you'd rather skip measuring several individual ingredients. Our Agar Pre-Mix combines agar and nutrients into an easy-to-use blend—measure, mix with water, sterilize, and pour.
Agar isn't just another product on our shelf. Culture media is a major part of what we do at Mycology Simplified. We regularly prepare and pour agar for our own pre-poured culture plates, so consistency, clean preparation, and dependable performance matter to us just as much as they do to you.
This bulk agar gives home growers and small labs the same kind of flexibility we rely on when preparing media ourselves.
Frequently Asked Questions
Is this a complete agar media mix?
No. This product is pure agar powder used to solidify culture media. You'll need to add your preferred nutrient source separately. If you want an easier all-in-one option, check out our Agar Pre-Mix.
How much agar should I use per liter?
We recommend starting around 20 grams per 1,000 mL of water. You can adjust the amount slightly if you prefer a softer or firmer finished plate.
Does agar contain nutrients for mycelium?
Pure agar is primarily the solidifying agent. A nutrient source such as light malt extract, yeast extract, potato dextrose, peptone, or sorghum syrup is typically added when making nutrient media.
How many plates can I make with a 1 lb bag?
At 20 g of agar per liter, a 1 lb bag makes approximately 22.7 liters of media. At a 20 mL pour per plate, that's roughly 1,100 plates. Actual yield depends on your recipe and pour volume.
How should I store agar powder?
Keep the bag tightly sealed and store it in a cool, dry location away from moisture and excessive heat.
Can I change the firmness of my agar?
Yes. The amount of agar can be adjusted slightly to create a softer or firmer finished media. Around 20 g per liter is a dependable starting point for most general culture work.
Simple. Reliable. Made for Mycology.
Whether you're pouring a few plates at home, experimenting with custom media recipes, or preparing agar in larger batches, our 1 lb Agar Agar Powder gives you an economical and flexible way to keep your lab stocked and your culture work moving.
Want to explore more options? Browse our full Agar Collection for agar powder, agar media, pre-poured plates, and agar-related supplies.
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Let customers speak for us
I've used 12 of the grain bags so far. All have been 100% excellent. I've had no problems with any. I've tried several other brand bags and had nothing but problems, thought it was me until I tried these. Love them, will be buying more as needed. Thank you .
Love it it’s ready to use what it does
This is my absolute favorite spot to get all my grain and substrate needs taken care of. Have yet to have a single issue. (and I have purchased multiple times!) Above all, my products come packaged in sealed sterile bag ready for liftoff as soon as it acclimates to my work area! Plus, they ship it so fast, that its at my door in a week. Always.
For years through trial and error I only had about a 30% success rate with mycellium growth with another vendor. I first purchased from Mycologysimplified a few months ago and have had exponential growth. I learned that it wasn't me, but the subpar products that I was using. I will back Mycologysimplified 100% on their quality, customer service, and overall products, and will continue purchasing from them for ALL of my growth needs.
Arrived early, Thanks!
Ive used it on about 10 or more times now and its worked perfect for my mushrooms. I also use your drippy corn and grains and i haven't had any problems from the either.Your products is the only ones i will buy and use.
Love the product cant wait to start
Great product! Poured well w/zero contamination.
Best agar plates on the market!!! These peptone enhanced plates are particularly good with slow growing cultures.
Best agar plates around, their special blend really makes for good growth in mycology study.
Fast shipping and packaged nicely!
Always a great product
Love this I’m about to do my first inoculation with drippy corn cant wait to see the difference
They are going to be great as well definitely will be getting more
These seem great as well plus They didnt have the 5 pack I ordered so they sent a 10 pack instead for the price of the 5 pack.. they have me as a life time customer..
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