Mushroom Kits sales are Suspended over Summer do to the Heat.  They will start again in the Fall.  Mushroom Kits are time Sensitive so Order when Needed and Not Before.  Some Mushroom Kits need to be started Immediately, Check Start Date on Kit.  Mushroom Kits are Shipped Promptly by Ground.  (5-129)


8am - 5pm PST. Online sales preferred. (3-150)

E-mail: [email protected]

Employment Inquiries Welcome.

Mushroom Adventures

11107 Highway 70

Marysville, CA 95901

About Mushroom Adventures (5-8)

Our Start

Mushroom Adventures began in 1996 in a San Francisco basement garage. The founder, Donald Simoni, had been growing mushrooms for over five years, when he needed more equipment: a pressure cooker that cost over $400.00. This seemed like a lot of money at the time to spend on a hobby, so Don made a few mushroom kits to sell at the local mushroom fair. Mushroom Kit sales went very well and Don earned half the money for the pressure cooker. Shortly after the San Francisco mushroom fair another mushroom fair in Santa Cruz was coming up so Don attended it and sold more mushroom kits.  So began the business, Mushroom Adventures.

A Kit Just for You

Each year Don continuously made improvements on the instructions and the manufacturing of the mushroom kits until he felt they were perfect. By talking with the customers over the sales table, Don received a good feel for what people wanted and expected out of his products. He then set out to deliver the best product he could.

By 1998, we had the first mushroom kit boxes printed. In 1999, we began wholesaling our first mushroom kits. This went well and by the year 2000, we had acquired our second wholesale account. In 2000, we out grew our basement operation and moved the production portion of our operation to Petaluma, Ca. There we had more room and we were closer to our raw materials.

Being in Petaluma afforded us more space so we acquired Emus for mascots. They are the second largest bird in the world. They weigh 130 pounds each. We hatched them in a small incubator. We started with 3 birds, but now we have 4. They have been an enjoyable pleasure and distraction from work when we need it.

Kits, Kits and More Kits

We still sell kits at fairs and special events, including wholesale, retail and mail order sales. Our product line has increased by adding new mushroom kits and removing some that proved difficult to maintain. We have been going through growing pains as the company sales have increased which has continuously forced us to find better ways to handle higher volume and to make a better product. We have future plans of acquiring our own property and relocating our entire operation on our own land. This would give us the ability to build our facility to suite our needs. This may be several years down the road, but it is an objective to strive for.

Mushroom Adventures Photos

Check out our Photo Gallery of Mushroom Adventures pictures.  We have included pictures in the gallery of our operation, Mascots and most of all the people that have contributed to our success. Our business is seasonal and therefore most of our help are seasonal as well, but many of them have been contributing seasonal for many years now.   

The story continues

In 2005 Mushroom Adventures obtained our own land up in the Marysville area of the central valley, just north of Sacramento.  Here we began the expansion faze of our company.  The new property had a house but no out buildings for us to do our work.  We purchased and had built a 6,000 square foot general agricultural building.  Since mushrooms are sensitive to temperature we insulated this building to handle the extreme temperature fluctuations that occur in the central valley.  From this new building we continued to manufacture our mushroom growing kits. 

In 2008 we applied to the CCOF for an organic certification for our fresh mushroom production.  To accomplish this we had to make our own compost.  This required us to pour more concrete and increase our wharf working space to have the room to make the compost.  After some trial and error we began to produce excellent organic compost.  We grow our fresh organic mushrooms for the farmers markets from this compost.  Our mushroom kits are made from the same compost, but are not certified organic. 

In 2010 we also began thinking of growing a regular supply of fresh mushrooms to sell at the farmers market.  To make this happen we built a second building divided into 3 growing rooms.  The growing rooms were insulated with 4 inch thick insulated urethane panels.  We drew on our knowledge from visiting other mushroom farms and designed the building ourselves.  By 2011 we had our air conditioners installed and were grow crimini, white button and portabella in them.  Our crops were rotated to always have mushrooms to take to the farmers market.

In 2013 we began to grow increased quantities of shiitake and oyster mushrooms.  This worked out well because it allowed use to add oyster and shiitake mushroom kits to our selection of mushroom growing kit. 

In 2014 we have begun small upgrades in our equipment to make things easier for us with the increase in production.

In 2015 we have started the season off soundly and are looking forward to a successful year.

In 2016 it was a very wet year.  We had 180% of our normal rain fall.  This unusual amount of rain made it difficult to maintain the correct level of moisture in our compost.  We also experimented with the production of our Shiitake, Lion's mane and Hen of the woods (Maitake) blocks.

In 2017 we decided to purchase 2 - 12" x 21" x 30" carports to keep our compost out of the rain during the last 2 weeks of aging.  This was a great success.  Our compost is much more productive as a results.  Most of the mushroom kits were made as ordered and as a results the kits were fresher and grew better.  We also added a red label to each of the mushroom kits telling the grower the product is time and temperature sensitive and to start the mushroom kit in a timely manor. This help kept the customer growing there mushrooms and producing plenty of mushrooms.

In 2018 it has turned out to be a reawakening of mushroom adventures.  I added a general video of mushroom adventures to our website.  I have also modified our compost and substrate formulas for all our mushroom kit.  As a results the mushrooms are growing much better and yields in the mushroom kits are too.  This was brought about by composting the compost a little dryer and increasing the formula.  Also with better control of the pasteurization process there has been an increased in production.  I also modified the shiitake and oyster mushroom kit formulas to boost mushroom yields significantly.   In some cases different strains of mushrooms are being used to enhance growth and  yields.   Our customer are going to like our mushroom kits and enjoy them as never before..

In 2019 we begin the year with great optimism.  We are going to streamline our fresh mushroom production and focus on growing mushroom varieties that are reliable to produce.  The year went well as planed.

Year 2020 turned out to be very productive for our mushroom kits and our fresh mushrooms at the farmers markets.  I made the decision this year to eliminate our wholesale mushroom kit business starting in the 3rd quarter of the year..  In part due to my age I am having difficultly seeing well and it made it difficult to process  the orders.  We are still shipping our own mushroom kits because our ordering system simplifies  it.

Another new thing happening at the farm is I am growing several varieties of potatoes and garlic.  We decided that since we are at the market anyway selling mushrooms we might as well sell complimentary items like potatoes and garlic which are often cooked together.  This will help with our market sales.

Another thing I plan to do is sell all our mushroom kits as organic.  They always have been organic but we never sold them as such.  Now they will be officially organic.

In addition to being organic I am changing the size of our mushroom kit to make them more affordable.  The New kits will be a 3/4 size kit.  smaller than the large but bigger than our small.  This will allow us to bring our price down and still have a kits that grows several crops.

That about sums up 2020 for you.  Stay safe during this pandemic we are all trying to be careful.

2021 a new year is upon us.  We survived the pandemic without incident.  We planted our potato, onion and garlic crop plus a few tomatoes.  I decided we needed to convert one of our shipping containers into a cold storage to store the potato and onion crops.  It took a lot longer than planned do to the shortages from the pandemic but it got done.  With the addition of the extra cold storage we can keep the crops fresher until sold.

In June our well pump died and had to be replaced.  Luckily it happened just before the summer heat wave and got fixed immediately. 

We have been experiencing  some smokey days due to the wild fires but have not really been effected by them much.  Our mushrooms are all grown indoors.

It is now September and we will be starting our mushroom kit season any day now.  I am excited to offer our products for sale again.  We no longer wholesale so all of our products are sold directly to you the consumer from us.

In 2022 summer, we have had a slow season coming out of the covid-19 pandemic.  The good news business was enjoyable not having to deal with wholesaling our mushroom kits, it was calm.   Here at the beginning of summer it is harvest season for our potatoes, onions and garlic, which we sell at the farmers market along with our mushrooms.   Mushroom kits will be available in the Fall as usual.  Probably in September 21.

Over the summer the farm was plagued with equipment break downs and repairs.   I guess it was time for our now older equipment to be freshen up.  Here I am in the fall and hopefully all the repairs are over and we can get to work making and shipping our great mushroom kits.   This year our electric bill just about doubled.  It happened for several reasons,  we had record breaking heat 43 days in a row over 100 degrees.  On top of that rate hikes by our electric provider and the installation of more lights and fans to make the mushrooms grow better.  To reduce our electric expense we took several measures.  First on top of our shipping containers that we grow mushrooms inside I piled 3 pallets high on the roof.  This creates some shade to keep them cooler.   Second some of our mushrooms require light to direct them to grow.  I installed timers to keep the lights on only in the evenings when it is cooler.  This lessened  the heat load on the air conditioners during  the day by only being on at night. Well that about sums it up for now.. Keep buying our mushroom kit We are always trying to improve them and to have new varieties to grow.

In 2023 Everything seemed to slow down a lot.  Our markets were slower due to continuous rain arriving on the weekend market days.  The rain also cut back on the available days to work out in the garden.  Mushroom production suffered some what do to rain getting into our pasteurization container affecting it.  The compost outside was getting to wet and water logged rendering it less productive.  That is all behind us now.  It is late summer now and I am getting ready for our next mushroom season and Fall garden planting.

Fall has arrived and it is time to harvest our sweet potatoes before it gets to cold.  Our persimmons are ripening on the trees October 18th. 

The State of California has informed me that they want the wording on my mushroom kit box changed to more comply with there disclosure laws.  So we are adjusting the wording on the mushroom kit box to meet California requirements.  We are removing the word organic from the packaging.  It seems to use that word we would have to pay a registration fee 5 times what we pay now per item type.  That amount of $500.00 per item type is expensive to us.  We will sell our mushroom kits as non organic and save that expense.

Donald 530-701-9700   (8-13-2023)