Variety field guide
What to expect from Mammoth Red Clover
Mammoth Red seeds establish a clumping/tufted stand for cover cropping, living mulch or forage use, flowers for beneficial insects, and soil-building rotations.
Read the complete product descriptionTraits, flavor, garden use, variety notes, and the full catalog record
Mammoth Red seeds establish a clumping/tufted stand for cover cropping, living mulch or forage use, flowers for beneficial insects, and soil-building rotations. Plan sowing, stand density, bloom, and termination around the role of this perennial rather than treating it like a single harvest vegetable.
About Mammoth Red
Mammoth Red is a perennial red clover with red color, 25–30 in mature height or spread, and a clumping/tufted habit. Harvest form or size: Flower or head form characteristic of Mammoth Red; mature plant 25–30 in. Botanically it is Trifolium pratense. Maturity or first bloom: Stage-based; germination: 7-14 Days at 55–70 °F. Best for cover cropping, living mulch or forage use, flowers for beneficial insects, and soil-building rotations. Agricultural cover or forage use; not described as a single culinary crop.
History and provenance
Clover seed is an agricultural crop as well as a flowering resource. SARE distinguishes crimson clover as an annual cover crop, red clover as a short-lived perennial or biennial type, and white clover as a persistent perennial living mulch. The species and named clover type are kept distinct rather than described with one generic clover profile. A complete public breeder or release record for the named Mammoth Red strain has not been located. The cultivar name is retained, but no person, community, date, or place of origin is assigned without reliable documentation. Mammoth Red Clover, Trifolium pratense, produces a vigorous, fast-growing cover crop and forage plant prized for its ability to improve soil health, attract pollinators, and provide abundant biomass. Mammoth Red Clover is larger and later maturing than many common red clover varieties, making it an excellent choice for pasture improvement, erosion control, green manure, and wildlife plantings. Gardeners and growers value Mammoth Red Clover for its deep root system, which helps loosen soil and naturally contribute nitrogen to future crops. Mammoth Red Clover Seeds are ideal for growers seeking a dependable, multipurpose planting that combines beauty with practical agricultural benefits.
Growing facts
| Scientific name | Trifolium pratense |
|---|---|
| Life cycle | Perennial |
| Maturity / first bloom | Stage-based |
| Germination | 7-14 Days at 55–70 °F |
| Seed depth | 1/4 in |
| Plant height / spread | 25–30 in |
| Growth habit | Clumping/Tufted |
| Spacing | 6 in between plants; 12 in between rows |
| Sunlight | Full sun |
| Soil | Loamy; pH 6.0–6.5 |
| Water | Moderate |
| Support | No-Support |
Starting Mammoth Red from seed
How to grow Mammoth Red
Botanical identity: Trifolium pratense. Life cycle: Perennial.
Sow 1/4 in and use a seed-zone temperature near 55–70 °F. Expected emergence: 7-14 Days. Use clean seed-starting conditions, the listed depth and temperature, and steady moisture without saturation.
Plant during Spring/Fall. Space plants 6 in apart with 12 in between rows or planting bands.
Provide Full sun, moderate water, and loamy near pH 6.0–6.5. Support: No-Support.
Garden performance and care
Decide before planting whether Mammoth Red will be winter-killed, mowed, crimped, incorporated, grazed, or allowed to flower. Termination timing determines biomass, regrowth, and the risk of volunteer seed. Expected emergence is 7-14 Days; the listed maturity or bloom timing is Stage-based.
Harvest, bloom, and uses
Mammoth Red is used for cover cropping, living mulch or forage use, flowers for beneficial insects, and soil-building rotations. Choose the termination or seed-maturity stage before planting, because the best timing differs when the goal is biomass, weed competition, pollinator bloom, forage, or saved seed.
Saving seed
Save seed from several healthy, true-to-type Mammoth Red plants identified before harvest. Confirm the pollination system of Trifolium pratense, separate compatible varieties that flower together, and remove clear off-types before they shed pollen or seed. Allow fruit, pods, ears, or seed heads to reach full biological maturity, then clean and dry the seed completely. Label the lot with variety, source, year, isolation method, number of seed plants, and any selection notes; store it cool, dark, and dry and test germination before an important planting.
Common problems
Common concerns: damping-off from saturated media; poor emergence from wrong temperature or depth; leggy seedlings from weak light; crowding and weak airflow; lodging in wind or rain; feeding damage from slugs, caterpillars, beetles, or mammals; foliar disease under prolonged leaf wetness. Management: use clean media, the sowing depth and temperature, strong light, appropriate thinning, and morning irrigation at soil level. Match support to plant height before wind becomes a problem. Inspect regularly and use the least disruptive control appropriate to the pest, plant, and pollinator setting. Remove diseased debris and rotate annual flower beds where recurring disease is severe.
Frequently asked questions
When is Mammoth Red ready?
Stage-based establishment and flowering; no single numeric maturity is displayed because first bloom varies with dormancy treatment and season
How long does germination take?
Expect 7-14 Days near 55–70 °F; actual emergence changes with moisture, seed condition, and soil temperature.
How large does it grow?
About 25–30 in with a clumping/tufted habit. Support: No-Support.
Can it grow in a container?
Possible in a large container, raised bed, or in-ground planting with room for the mature plant
How is it used?
Primary role: Cover cropping, living mulch or forage use, flowers for beneficial insects, and soil-building rotations. Agricultural cover or forage use; not described as a single culinary crop.
Can I save seed?
Yes where the crop biology allows, but keep compatible varieties isolated, use several healthy plants, wait for full seed maturity, dry thoroughly, and label the lot.
Minimum Seed Count:500 seeds
