Wildflower Seed Mixes
Flower Seed Species
Perennial Plants
Pre-Planned Gardens
Spring Planted Bulbs
Fall Planted Bulbs
Grass Seed
Event & Promo Packets
SEE ALL PRE-PLANNED GARDENS 
REMOVE THE GARDEN GUESSWORK

Pre-Planned gardens are perfect for those of us who need a bit of help creating flower groupings that complement one another's height, color, texture, and bloom time throughout the entire season.


NUMEROUS LAYOUT OPTIONS Pre-Planned Garden Layouts
Installing a Pre-Planned GardenInstalling a Pre-Planned Garden. Why Pre-Planned Gardens?Why Pre-Planned Gardens? How Our Plants are ShippedHow Our Plants are Shipped.


WHAT OUR CUSTOMERS HAVE TO SAY


“I couldn't have been happier with how it turned out.
My neighbor comments on it every time she walks by.”


Jan in Longmont, Colorado
SHOP EVENT & PROMO PACKETS 
PROMO & EVENT PACKETS 


Event Icon

Whether you’re hosting an event or looking for a unique business mailing, seed packets are an affordable and creative choice. The easy-to-grow, eco-friendly seeds inside will keep your event or business front of mind all season long.


5 REASONS TO BUY SEED PACKETS FOR YOUR PROMOTION OR EVENT 1) FREE ground shipping! 2) Promotional and event seed packet orders ship within 48 hours. 3) Non-GMO seeds and recycled paper 4) Mix and match discounts 5) Express shipping, just call (877) 309-7333


FULLY CUSTOMIZED SEED PACKETS 

Put your totally custom designs on seed packets.

Show meShowing plants & seeds that grow in my area:

Invalid Zip Code
ALASKA HAWAII MIDWEST NORTHEAST PACIFIC NORTHWEST SOUTHEAST SOUTHWEST WEST Zone 1 Zone 2 Zone 3 Zone 4 Zone 5 Zone 6 Zone 7 Zone 8 Zone 9 Zone 10
What is this To help gardeners understand which plants will grow well for them, the entire USA has been segmented into ‘Plant Hardiness Zones’.

Yellow Mammoth Dutch Crocus

 

Video

 

Regular Price: $15.98

Sale $7.99

per Bag of 20 You save: 50%
Shipping:
Shipping begins in September based on ground temperatures, coldest zones first. Learn More…

These are the much loved large flowering crocus with the glowing butter yellow shine. Plant in large groups for spectacular color. (Crocus flavus)

Zones 3 - 9
Advantages
Deer Resistant
Deer Resistant
Bee Friendly
Bee Friendly
Easy to Grow
Easy to Grow
Containers
Containers
Groundcover
Groundcover
Grow in the Lawn
Grow in the Lawn
Light Requirements
Full Sun
Full Sun
Half Sun / Half Shade
Half Sun / Half Shade
Mature Plant Size 4-6" tall
Bulb Spacing16 bulbs per sq. ft.
Bloom Time Early spring
Size Bag of 20 - Bulb Size: 9-10 cm
SKU 54MIBU20

Plant Information

Make up your own mix, or plant a huge drift of yellow. Yellow Mammoth never disappoints, and is a knock-out against early springs deep green lawns. Yellow Mammoth is the largest crocus of them all, with blooms sometimes as wide as 4 inches, and it's a classic. It's been cultivated in gardens since the seventeenth century!

Planting in the lawn is simple, since the bulbs are so small, and the effect in spring is a real treat. The more you plant, the better it will look. One caveat: If you plant in the lawn, wait 6 weeks after flowers bloom to mow.

SKU 54MIBU20
Common Name Dutch Crocus Yellow Mammoth
Botanical Name Crocus flavus Yellow Mammoth
Zones 3, 4, 5, 6, 7, 8, 9
Ships As Bulb, Rhizome, Tuber
Light Requirements Full Sun, Half Sun / Half Shade
Flower Color Yellow
Mature Height 4-6" tall
Bulb Size 9-10 cm
Bulb Spacing 16 bulbs per sq. ft.
Planting Depth Plant 3" deep
Bloom Time Early spring
Plant Type / Life Cycle Perennial
Planting Time Fall
Soil Type Clay Soil, Sandy Soil, Loamy Soil, Drought/Dry Soil
Soil Moisture Average, Well Draining
Advantages Deer Resistant, Bee Friendly, Easy to Grow, Containers, Groundcover, Grow in the Lawn
Ships to Hawaii, Alaska & Canada No

Shipping

Shipping begins in September based on ground temperatures, coldest zones first.

As soon as your order is placed you will receive a confirmation email. You will receive a second email the day your order ships telling you how it has been sent. Fall bulbs are shipped at the proper planting time for your hardiness zone. Perennial orders may arrive separately from bulbs and seeds. If your order requires more than one shipment, there is no additional shipping charge. See our shipping information page for approximate ship dates and more detailed information. If you need express shipping or have any questions, please call Customer Service toll-free at (877) 309-7333 or contact us by email.

View Shipping Rate Chart

Reviewsby PowerReviews

REVIEW SNAPSHOT®

by PowerReviews
American MeadowsYellow Mammoth Dutch Crocus
 
4.1

(based on 14 reviews)

Ratings Distribution

  • 5 Stars

     

    (7)

  • 4 Stars

     

    (5)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (1)

92%

of respondents would recommend this to a friend.

Pros

  • Vivid colors (8)
  • Low maintenance (7)
  • Reliable growth (6)
  • Accurate instructions (5)
  • Large bulb size (5)

Cons

No Cons

Best Uses

  • Border control (5)
  • Garden (4)
  • Lawn (3)
  • Outdoors (3)
  • Raised beds (3)
    • Reviewer Profile:
    • Avid gardener (9)
    • Primary use:
    • Personal (5)

Most Liked Positive Review

 

Dutch Crocus Yellow Mammoth

I planted a bunch of these under my forsythia last fall and the order arrived quickly and all the bulbs were large and healthy. They are just now emerging (March in Iowa) and...Read complete review

I planted a bunch of these under my forsythia last fall and the order arrived quickly and all the bulbs were large and healthy. They are just now emerging (March in Iowa) and it looks like their bloom time will coincide with the forsythia, as I had hoped. I can hardly wait to see how it looks! The species crocus are already blooming. I fully intend to plant hundreds more all over the lawn this next fall, they are such a mood-lifter after all the dull gray of late winter!!!!

VS

Most Liked Negative Review

 

Did not grow

Bad deal planted per instructions and no results. waste of money.

Bad deal planted per instructions and no results. waste of money.

Reviewed by 14 customers

Displaying reviews 1-14

Back to top

 
4.0

Deer love them!

By 

from upstate New York, zone 4/5

About Me Master Gardener

Verified Reviewer

Pros

  • Accurate Instructions
  • Attractive
  • Hardy
  • Versatile

Cons

    Best Uses

    • Garden
    • Lawn
    • Outdoors

    Comments about American Meadows Yellow Mammoth Dutch Crocus:

    These crocus are not the early species variety but later in April/May. You cannot mow over them right away and the grass gets fairly long before you can mow. However, they are large and showy, especially in clusters. If you have no bulbs blossoming, it might be because of deer. I found out that they were eating them to the point of killing the bulb. Now I go out early March and spread deer repellent over the area, and also use red pepper that I buy in bulk.

    • Primary use:
    • Personal
     
    5.0

    absolutely gorgeous

    By 

    from Swarthmore PA

    About Me Getting Started

    Verified Reviewer

    Pros

    • Accurate Instructions
    • Attractive
    • Hardy
    • Healthy
    • Versatile

    Cons

      Best Uses

      • Garden
      • Lawn
      • Outdoors

      Comments about American Meadows Yellow Mammoth Dutch Crocus:

      bright yellow, looked absolutely gorgeous

      • Primary use:
      • Personal

      (0 of 2 customers found this review helpful)

       
      2.0

      disappointed, bulbs were healthy

      By 

      from Saugerties, NY

      About Me Avid Gardener

      Pros

      • Accurate Instructions

      Cons

        Best Uses

        • Garden

        Comments about American Meadows Yellow Mammoth Dutch Crocus:

        bulbs were very healthy when I received them, maybe because our winter wasn't very goo this year, no snow

        • Primary use:
        • Personal
         
        1.0

        Did not grow

        By 

        from MN

        Comments about American Meadows Yellow Mammoth Dutch Crocus:

        Bad deal planted per instructions and no results. waste of money.

         
        4.0

        Bright yellow crocus flowers

        By 

        from Rockland, Wisconsin

        About Me Avid Gardener

        Verified Reviewer

        Pros

        • Large Bulb Size
        • Low Maintenance
        • Vivid Colors

        Cons

        • Short Bloom Time

        Best Uses

        • Raised Beds

        Comments about American Meadows Yellow Mammoth Dutch Crocus:

        I like the color of these crocus flowers and the fact that they require low maintenance.

         
        5.0

        Big BrightYellow Crocus

        By 

        from Boston MA

        About Me Avid Gardener, Getting Started

        Pros

        • Large Bulb Size
        • Long Bloom Time
        • Low Maintenance
        • Reliable Growth
        • Vivid Colors

        Cons

          Best Uses

          • Border Control

          Comments about American Meadows Yellow Mammoth Dutch Crocus:

          Love the bright yellow color duration of the crocus.

           
          5.0

          Large showy blooms

          By 

          from Tulsa, OK

          About Me Casual Hobbyist

          Verified Reviewer

          Pros

          • Large Bulb Size
          • Long Bloom Time
          • Low Maintenance
          • Reliable Growth
          • Vivid Colors

          Cons

            Best Uses

            • Border Control
            • Containers
            • Raised Beds

            Comments about American Meadows Yellow Mammoth Dutch Crocus:

            Great Blooms

            (1 of 1 customers found this review helpful)

             
            4.0

            Nice but not mammoth

            By 

            from New City, NY

            About Me Avid Gardener

            Pros

            • Reliable Growth
            • Vivid Colors

            Cons

              Best Uses

                Comments about American Meadows Yellow Mammoth Dutch Crocus:

                Misleading>Not huge blooms but the usual crocus yellow and reliable

                 
                4.0

                Surprisingly Beautiful

                By 

                from Bend, OR

                About Me Avid Gardener

                Verified Reviewer

                Pros

                • Low Maintenance
                • Pest Resistant
                • Reliable Growth
                • Vivid Colors

                Cons

                  Best Uses

                  • Border Control
                  • Containers
                  • Large Areas
                  • Raised Beds

                  Comments about American Meadows Yellow Mammoth Dutch Crocus:

                  Our spring is slow to start each year in zone 5a, so imagine my surprise when 1 week ago there was no sign of my crocus, and this week they suddenly appear! I was a little kid seeing beautiful flowers for the first time. Winter is just too long for me.

                   
                  5.0

                  Such a wonderful sight

                  By 

                  from Harrisburg , PA

                  About Me Avid Gardener

                  Pros

                  • Large Bulb Size
                  • Low Maintenance
                  • Reliable Growth
                  • Vivid Colors

                  Cons

                    Best Uses

                    • Border Control

                    Comments about American Meadows Yellow Mammoth Dutch Crocus:

                    am going to buy more of these

                     
                    5.0

                    Great color but not mammoth in any way

                    By 

                    from New City, NY

                    About Me Avid Gardener

                    Pros

                    • Long Bloom Time
                    • Low Maintenance
                    • Reliable Growth
                    • Vivid Colors

                    Cons

                    • Not mammoth in any way

                    Best Uses

                      Comments about American Meadows Yellow Mammoth Dutch Crocus:

                      Great color but not mammoth in any way

                       
                      5.0

                      How delightful!

                      By 

                      from Fayetteville, AR

                      About Me Casual Hobbyist

                      Pros

                      • Large Bulb Size
                      • Long Bloom Time
                      • Low Maintenance
                      • Vivid Colors

                      Cons

                        Best Uses

                        • Border Control

                        Comments about American Meadows Yellow Mammoth Dutch Crocus:

                        I love crocuses...they are always the first to pop up when Spring is near! I planted about 4 separate groups with around 5 bulbs each in my front yard perennial garden bed right at the border. ! actually think there were more than 20 bulbs which was a nice bonus! The colors were beautiful and they lasted for quite some time. These were up in early February since we had such a mild winter here.

                         
                        4.0

                        Gorgeous color!

                        By 

                        from CT

                        About Me Avid Gardener

                        Verified Reviewer

                        Pros

                        • Accurate Instructions
                        • Attractive

                        Cons

                          Best Uses

                          • Garden

                          Comments about American Meadows Yellow Mammoth Dutch Crocus:

                          Just as described, pretty and a beautiful pop of color after those long winter months!

                          • Primary use:
                          • Personal
                           
                          5.0

                          Dutch Crocus Yellow Mammoth

                          By 

                          from Iowa

                          About Me Avid Gardener

                          Verified Reviewer

                          Pros

                          • Accurate Instructions
                          • Attractive
                          • Hardy
                          • Healthy

                          Cons

                            Best Uses

                            • Lawn
                            • Outdoors

                            Comments about American Meadows Yellow Mammoth Dutch Crocus:

                            I planted a bunch of these under my forsythia last fall and the order arrived quickly and all the bulbs were large and healthy. They are just now emerging (March in Iowa) and it looks like their bloom time will coincide with the forsythia, as I had hoped. I can hardly wait to see how it looks! The species crocus are already blooming. I fully intend to plant hundreds more all over the lawn this next fall, they are such a mood-lifter after all the dull gray of late winter!!!!

                            • Primary use:
                            • Personal

                            Displaying reviews 1-14

                            Back to top

                            Q & A

                            Plant With These:

                            USDA Hardiness Planting Zones

                            To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low temperatures; the lower the zone number the colder the winter.

                            • If the coldest winter temperature expected in your area is -15°F (zone 5) then any plants rated zones 3-5 will survive the winter temperatures in your area.
                            • If you live in very warm winter areas (zones 9-11) plants with zones 3-4 ratings are not recommended. The lack of freezing winter temperatures do not provide a time for winter dormancy (rest).

                            Find Your Planting Zone:

                            Enter your Zip Code to find your USDA Planting Zone

                            You are using an out-of-date browser.

                            You will still be able to shop AmericanMeadows.com, but some functionality may not work unless you update to a modern browser. Update My Browser

                            ×

                            Please wait...

                            Item added to your cart

                            has been added to your cart.

                            Continue shopping or View cart & checkout