Mindful Mushrooms

Owner: Riley Sevigny

Oregon City, OR

daytime phone: (503) 784-8739
Web site:

Application Date: 2021-12-20

Applicant Details

Please briefly tell us why you are applying to be part of the Certified Naturally Grown program. *
I would like our mushrooms and mushroom farm to hold the highest standards. Since we already do not use fungicides, chemicals, or pesticides at our farm, we would like to offer our customers accountability within our farming practice.
Are you currently third party Certified for your produce operation by any other organization (Organic, Biodynamic, etc)? *
Have you held any certification/s in the past that you don't currently hold? *
Have you ever been denied certification? *
How did you hear about Certified Naturally Grown? *
Many of our farm friends at the farmers markets are certified naturally grown and recently gave me information on how to apply.
How did you learn to grow mushrooms, and for how long have you been growing them for market? What has prepared you to farm successfully according to CNG standards? *
I learned to grow mushrooms through other mushroom farmers and reading Paul Stamet's books on cultivation practices. I have been in business for almost 4 years and have been growing mushrooms for almost a decade.

General Information

Check all types of mushrooms you intend to certify. Please include any types you intend to grow or harvest in the coming 24 months. *

Other types you'll be growing, not listed above:
Are there any mushroom types you grow or harvest for which you are NOT seeking certification? Please list all such types, and explain why you are not seeking to certify them.
Please check all markets you grow for (this will be displayed on your farm profile to help potential buyers find you). *

Please specify what other markets (if any).

Substrate, Supplements, and Other Materials

For each type of mushroom you produce, tell us about your substrate. (Put "N/A" or leave blank for any type you don't produce). Please indicate in the appropriate box below: 1) what you use for substrates and supplements (if any) and 2) the sources of these materials. Include names of products and distributors where appropriate. If any substrate is obtained from a non-commercial source, please describe that source.
Shiitake (Lentinula)
Oyster (Pleurotus)
1) 50% Non GMO Soybean Hulls, 50% Alder sawdust (clean and free of glues and chemicals) 2) *Alder sawdust from Rexius, Address is 150 OR-99, Eugene, OR 97402, Phone # (541) 342-1835 *Non GMO Soybean Hulls from Mushroom Media, substrates-supplements/
King stropharia, garden giant, wine cap (Stropharia)
Reishi (Ganoderma)
1) 50% Non GMO Soybean Hulls, 50% Alder sawdust (clean and free of glues and chemicals) 2) *Alder sawdust from Rexius, Address is 150 OR-99, Eugene, OR 97402, Phone # (541) 342-1835 *Non GMO Soybean Hulls from Mushroom Media, substrates-supplements/
Enoki, velvet foot (Flammulina)
Maitake, hen of the woods (Grifola)
Butterscotch mushroom (Nameko)
Lion's mane, pom-poms (Hericium)
1) 50% Non GMO Soybean Hulls, 50% Alder sawdust (clean and free of glues and chemicals) 2) *Alder sawdust from Rexius, Address is 150 OR-99, Eugene, OR 97402, Phone # (541) 342-1835 *Non GMO Soybean Hulls from Mushroom Media, substrates-supplements/
Chicken of the woods (Laetiporus)
White button, portabella (Agaricus)
Other (please specify)
Chestnut Mushroom 1) 50% Non GMO Soybean Hulls, 50% Alder sawdust (clean and free of glues and chemicals) 2) *Alder sawdust from Rexius, Address is 150 OR-99, Eugene, OR 97402, Phone # (541) 342-1835 *Non GMO Soybean Hulls from Mushroom Media, substrates-supplements/
Did you remember to indicate, for each of the substrates and supplements noted above, the sources of these materials? You may use this space to say anything else about the substrates you're using or may want to use in the future.
Do your substrates include corn, soy, cotton seed hulls, or other byproducts of crops that are grown commercially in GMO form? *
Do you use logs as a substrate? *
Do you use wood chips, sawdust, sawdust blocks, or wood pellets? *
Have you confirmed that these are not chemically treated, nor contain glue or other adhesives? *
Do you use any of the following items as substrate: cardboard, paper, clothing, municipal compost, wood from rare trees harvested for mushroom production? *
Do you use manure as a substrate in your mushroom operation? *
Please describe all sterilization or pasteurization procedures and materials you use. (If none, please put N/A) *
We use polypropylene bags to fill with substrate. We then steam sterilize these bags for 27 hours in a trough with a steam generator piped in.
How do you dispose of or re-purpose used substrate? Please indicate current practices as well as any plans you have for how the used substrate may be put to further productive use. *
We give the spent blocks away as compost to local folks and community gardens. We also have a mushroom compost pile on the property.
How do you ensure that nutrients from used substrate do not leach into waterways? *
The pile stays in one area and there are no waterways nearby.

Containers, Racks, and Beds

Please describe the racks and beds used in production (if any). What are they made of? *
Shelves built in the fruiting room were made with cedar 2x4's and metal conduit.
Please describe any containers used for sterilization, and/or pasteurization. What are they made of? *
A trough made of steel
Please describe any containers used for production. What are they made of? If you don't use containers for production (as for log-based production) you may answer "n/a". *
polypropylene bags batch mixer machine used to mix the substrate
Were the containers purchased new or repurposed? If re-purposed, please describe how the containers had been used previously, and how you confirmed this with the supplier(s). *
In your operation, do any of the following materials come into direct contact with any substrate or fruiting bodies?Plastics that contain BPA, polystyrene, treated wood, railroad ties, containers that previously held toxic materials, re-purposed containers that had an unknown prior use *

Wild Harvest

CNG Mushroom certification covers cultivated mushrooms, not wild-crafted mushrooms. However, we include this section on the application for two reasons: #1 It is important to us that those who participate in our programs are mindful of the sustainability of the non-certified portions of their operations. #2 We want to give our members the opportunity to be transparent about their wild-crafting practices, and to minimize confusion about which mushrooms are certified.
Are any of the mushrooms you sell wild harvested (or "wildcrafted")? Yes/No *
What types of wild mushrooms do you harvest and sell? *
Please describe what measures you take to ensure that you do not over harvest these mushrooms, and that there will continue to be wild mushrooms of that variety in the locations where you found them. *
We have many locations that we harvest from to spread out the harvest and ensuring we don't over harvest in one localized area. We also don't harvest many mushrooms in the wild because our main focus is on cultivation.
Since CNG doesn't offer certification for wildcrafted mushrooms, you must agree not to market any wildcrafted mushrooms (or products made from them) as Certified Naturally Grown. Please indicate you agree to this requirement by typing your initials here. *


What water contamination experts have you consulted to identify which contaminants are typically found in area water, and determine the tests that should be conducted? Relevant experts may include local or state health department officials, Natural Resource Conservation Service agents, state environmental protection or pollution control agencies, local well drilling and water testing companies. (If you haven't yet done this, please indicate who you will approach, and by when you expect to have completed this program requirement.) *
Our water is through the city. We are not on a well.
Have you tested your water at the point of use for heavy metals or other contaminants that were identified by local water quality experts? When? What were the results? (If you haven't yet done this, please indicate by when you expect to have completed this program requirement.) *
N/A- We are on city water
Do you use well water to mist or irrigate fruiting bodies? *
Do you use surface water to soak logs or to irrigate non-fruiting substrate? Surface water includes water from ponds, streams, and reservoirs. *
Do you ever use surface water to mist or irrigate fruiting bodies? *


Do you purchase spawn or produce your own or some of each? (If purchased, please list the supplier.) *
Sometimes we purchase spawn and sometimes we buy it. When we buy the spawn, we buy from North Spore and their spawn is certified Organic When we produce our own, we use organic rye berry grain purchased from Natural Grocers.
CNG mushroom standards prohibit for spawn production the use of adhesives, byproducts of GMO crops, or other materials prohibited for use as substrate. Are you confident none of these materials were used as a growing media for the spawn? *

Pest & Disease Management

Describe your primary insect pest challenges AND methods of prevention and control. (Do not answer "none". You MUST indicate actual pest challenges or LIKELY challenges, and you must ALSO indicate how you manage or how you would manage them. If you indicate a product, also specify how often it's used.) *
We have fungus gnats in the summertime and we manage them by using sticky fly traps and are constantly changing them out. Quite effective! We simply hang them on the cedar 2x4's and they never come in contact with the fruiting bodies because they are stuck to the 2x4 until they are removed.
Describe your primary disease challenges AND methods of prevention and control. If you indicate a product, also specify how often it's used. *
Sometimes we encounter trichoderma mold. We simply toss it into the compost pile. We don't use prevention or any fungicides. Instead, we just try to be more clean when working in the lab during inoculation.

Site Location and Buffers

Is your operation either partially or entirely INdoors? *
Please describe neighboring land uses to the north, south, east and west of your INdoor operation. *
The land nearby are just resident neighbors. There are no other farms nearby.
Do these uses pose a risk of drift or contamination? If so, please describe. *
How does your ventilation and air filtration system prevent possible contamination? *
We have a hefty intake air circulation system in the incubation room. Air from the outside gets pushed through a prefilter, intake fan, hepa filter, and uv light and then finally circulates through a few registers into the room.
If you share space with other producers, please indicate whether they use synthetic chemicals, and if so, how do you protect your production area from potential contamination? *
Is your operation either partially or entirely OUTdoors? *

Sustainability Initiatives

What measures have you taken to conserve energy, improve energy efficiency, and/or use energy from renewable sources? (This could include system design, siting, insulation, lighting choices, and more.)
We have heavily insulate every building that we use to grow mushrooms. Our lighting choices consist of very low wattage led lights in all buildings.
Please use this space to highlight any other measures you take to reduce the environmental impact of your operation or to make it more sustainable in other ways.
We recycle the spent mushroom compost to locals and community gardens.

Inspections & Networks

A core requirement of CNG certification is the on-site peer-review. Getting this completed is facilitated if you're a part of a network of mushroom producers who might serve as your inspector.
Are you a part of a network (informal or formal) of mushroom producers in your geographic area? *
Please tell us about your network. Does it have a name? Roughly how many members, and what geographic area does it cover? *
I know other mushroom farmers in the area. Bridgetown mushrooms an harvest moon mushrooms. They are locate in Portland, OR and Tigard, OR


I will not label, or in any way lead consumers to believe that a farm product not raised in accord with CNG standards is Certified Naturally Grown *
I understand that I have to complete at least one Inspection of another CNG mushroom producer in my area each year, if there is one within a one hour drive. *
I understand that the inspection I conduct will NOT be of the same producer that inspected me. *
I have reviewed the Certified Naturally Grown mushroom certification standards, I understand them, and I will abide by them. If I have any questions I may contact CNG for clarification. *
You may use this space to tell us anything else you think we should know about your operation.