RC Big Rock Switchgrass is a new and improved native upland switchgrass bred from Cave-In-Rock genetics. Commonly reaching 7–9 feet under proper conditions, it creates dense vertical structure ideal for screening, deer bedding, and winter thermal cover. It matures slightly later than Cave-In-Rock and is selected for strong stem strength and dependable winter standability. This variety is well adapted across much of the Midwest, Northeast, and Central United States. It performs best in full sun and well-drained soils, but it has done very well in areas with partial shade and seasonal flooding.
Highlights:
Seeding Rate: 7–10 lbs per acre
Use 10 lbs per acre for thicker screening. Use 7-8 lbs per acre for bedding cover.
Seed Type: Warm-Season Perennial Native Grass
Planting Time: Winter (Frost Seeding) through Mid Summer (with adequate moisture)
Planting Method: Frost Seed, Drill, or Broadcast
Sunlight: Full Sun (Best) – Tolerates up to 50% shade
Frost Seeding Note: Increase seeding rate by approximately 25%.
For more information on preparation, planting, spraying, and fertilizing, visit our Seed Information page.
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We ship to all 50 U.S. states.
Orders typically ship same day or next business day.
Most orders are shipped via USPS. Larger orders may ship UPS or FedEx.
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Didn’t come up as was expected
I've planted this stuff in a few different locations over the past two years. I've never had a switchgrass get so tall. This stuff gets taller in the first year than the older varieties do in 3. This will always be used on all my properties.
Quick deliver at a good price.
I planted two bags of seeds. So far neither has came up. I disks the ground and sowed on top to make sure I did not getthe seeds to deep
My delivered package of RC Big Rock consisted of pure seed, containing no inert material as visible through the clear plastic container. This was my second purchase from TnT and won't be my last!
Shipping was fast and the bag contained pure seed.
I will be a returning customer.
Received order quickly
I was super impressed with how quickly I received my seed and how clean it is. The 1/2 covered exactly what I needed planted and will be making my future seed purchases here.
seed goes fast
TnT Seed Company is the best company I've worked with for seed. Great customer service, extremely helpful, fast shipping, and high quality seed! I will be a customer for life.
Toby was great to work with ! Very responsive and helpful ! Greatly appreciated!!!
Looks like good seed! Price is good, when I got it I lost about half of it due to shipping. I gathered what I could and put it out.
Got my switch grass quickly, but one of the bags had a hole in it from the shipping...
I would switch grass and it was delivered as promised I believe within four days. Great service.
First time ordering, went with a new variety of switch grass TNT had in stock. Offered a promo coupon so was a no brainer with their already competitive pricing.
Very easy ordering process. Solid communication about my order with confirmation when it hit my door step. Seed is as described. Hope this company continues to thrive. The seed business needs good people not trying to price gouge.
My delivered package of RC Big Rock consisted of pure seed, containing no inert material as visible through the clear plastic container. This was my second purchase from TnT and won't be my last!
It’s been super dry here in Illinois so I’m sure we didn’t get the growth we were supposed to out of this mix. Customer service is awesome. Quality of the seed has always been great.
I planted this for the first year in a 2 acre plot and the deer love it!! Sat on plot opening day of bow in northern Michigan and had 17 deer out there.
I've planted this stuff in a few different locations over the past two years. I've never had a switchgrass get so tall. This stuff gets taller in the first year than the older varieties do in 3. This will always be used on all my properties.
Excellent packaging, just got rain a few days ago and it is germinating great!
Seed germinated quickly and when they got about 2” tall, groundhogs wiped them out! Plan “B”?
