WPCouponCode
Redwood Mushroom Supply logo

Redwood Mushroom Supply Promo Codes for November 2026

  • 9 codes
  • 20% off
  • Updated just now

Top pick

10%offStorewide

Top pick

You save 10% on your order

Last worked 13 hours ago

Today's promo codes (8)

  1. 10%offStorewide

    You save 10% on your cart

    Last checked 13 hours ago

  2. 5%offStorewide

    You get 5% off your cart

    Last checked 15 hours ago

  3. 20%offSelected items

    You save 20% on qualifying items

    Last checked 14 hours ago

  4. 15%offSelected items

    15% off qualifying products

    Last check failed 4 weeks ago

  5. 15%offStorewide

    You get 15% off your cart

    Last check failed 4 weeks ago

  6. 20%offSelected items

    20% off grain and substrate on select items

    Last check failed 4 weeks ago

  7. 10%offStorewide

    You pay 10% less on your order

    Last check failed 4 weeks ago

  8. 15%offStorewide

    15% off your cart

    Last check failed 4 weeks ago

Tested at checkout

What each code took off a real cart on the day we tried it. Prices and codes change.

  • RMSW10 WorkedTested −$17.46 saved · $174.87 cart · 6 itemsSakato PP Mushroom Grow Bags, Dr. Myc™ MGP Plus Microbes, Microppose Silicone Jar Covers, Dr. Myc™ Adaptive Liquid Culture PreMix, 1/2" Micropore Tape (4 Rolls), Jump Start Seedling Heat MatView screenshot & cart
    Redwood Mushroom Supply checkout with RMSW10, tested 8 Nov 2026, 00:27 UTC
    Tested products
    ProductCoupon discountTotal
    Sakato PP Mushroom Grow Bags1 × $54.40−$5.44$48.96
    Dr. Myc™ MGP Plus Microbes1 × $25.49−$2.54$22.95
    Microppose Silicone Jar Covers1 × $48.00−$4.80$43.20
    Dr. Myc™ Adaptive Liquid Culture PreMix1 × $14.00−$1.40$12.60
    1/2" Micropore Tape (4 Rolls)1 × $7.99−$0.79$7.20
    Jump Start Seedling Heat Mat1 × $24.99−$2.49$22.50
    Subtotal
    $174.87
    Coupon savings
    −$17.46
    Other savings
    $0.00
    Total before shipping & tax
    $157.41

Promo code questions

Where do I enter my Redwood Mushroom Supply promo code?

In the promo or discount code box at the redwoodmushroomsupply.com checkout. Copy the code from this page first.

Why isn’t my Redwood Mushroom Supply code working?

Usually the order doesn’t meet the code’s condition. Here, 3 codes work only on selected items. A code for selected items says so on the left side of its coupon.

What’s the best Redwood Mushroom Supply promo code?

20% off: the biggest percentage discount among the 9 codes here.

More offers in House, Garden & Garage