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How to Grow Timothy Grass 'Climax'

Timothy Grass 'Climax'

Phleum pratense 'Climax'

grass

Timothy 'Climax' is a perennial cool-season forage grass widely cultivated for hay and pasture production. This cultivar is known for its robust growth, high yield, and excellent nutritional value for livestock. It produces distinctive dense, cylindrical seedheads and deep fibrous root systems that improve soil structure.

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Example Timothy Grass 'Climax' timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Timothy Grass 'Climax'

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Timothy Grass 'Climax'

    Late summer into fall

    Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact Timothy Grass 'Climax' dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 6+ hours daily; tolerates partial shade but prefers full exposure
💧
Water: Moderate moisture; requires 15-25 inches of annual precipitation. Establish with consistent moisture for first 6-8 weeks; mature stands are drought-tolerant relative to other forages.
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Spacing: Broadcast seed at 10-15 lbs per acre (approximately 0.25-0.35 lbs per 1,000 sq ft); thin seedlings to 1-3 inches apart in dense stands inches
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Days to maturity: 60-90 days to first cut; 2-3 years for full production potential
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Planting depth: 0.25-0.5 inches; shallow seeding—press seed into soil contact

Soil

Type: Well-draining loamy soil with good organic matter
pH: 6.0-7.5
Amendments:
Compost for organic matter Lime if pH is below 6.0 Balanced fertilizer (10-10-10 or similar) at establishment

Growing Zones

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Thrives in zones 2-7; prefers cool climates with moderate moisture

2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b

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Growth Stages

1

Germination & Seedling

2-4 weeks

Fine, grass-like seedlings emerge with narrow leaf blades. Root system develops rapidly.

Keep seedbed consistently moist (not waterlogged). Avoid grazing or cutting during this phase. Protect from competing weeds.

2

Vegetative Growth

6-12 weeks

Plant develops multiple tillers and expands leaf canopy. Roots deepen and spread extensively.

Apply balanced fertilizer once plants are 4-6 inches tall. Monitor for weeds and remove by hand or light cultivation if needed.

3

Boot & Heading

3-4 weeks

Flower heads emerge from leaf sheaths and develop into characteristic dense, cylindrical spikes. Plant reaches 18-36 inches tall.

This is the optimal stage for first-cut hay harvesting. Ensure adequate moisture and nutrients for seed development if saving seed.

4

Flowering & Seed Production

2-3 weeks

Distinctive dense seedheads fully mature; individual florets flower. Heads are stiff, cylindrical, and 1-4 inches long.

If harvesting for seed, allow full maturation. For forage, cut before heads fully harden to maintain nutritional quality. Apply phosphate fertilizer to support seed development.

5

Maturity & Regrowth

4-8 weeks per cycle

Seeds mature and darken. Plant can regrow for second and third cuts in growing season if managed properly.

After harvest, allow 4-6 weeks recovery before second cut. Apply nitrogen fertilizer after each harvest to promote regrowth. Mature stands require less intensive care.

Companion Planting

Plan your garden →

Plant with:

Alfalfa Red clover White clover Birdsfoot trefoil Orchardgrass (as pasture mix)

Avoid planting near:

Competitive aggressive weeds (bindweed, thistles) Legumes in monoculture pastures (reduces timothy vigor) Recently herbicide-treated areas (may inhibit germination)

Common Pests

  • Avoid early seeding in susceptible regions; use resistant seed sources; manage with adequate fertilization to promote vigor and recovery.

  • Monitor for defoliation; use parasitic wasps or beneficial insects; cut infested pasture at ground level to disrupt larvae; insecticides as last resort.

  • Improve drainage and avoid waterlogging; rotate with other crops; ensure adequate soil aeration; select disease-resistant varieties like 'Climax.'

  • If seed production is primary goal, monitor during flowering; early cutting before midge emergence may reduce damage; resistant varieties recommended.

  • Maintain good stand density to minimize damage; cultural controls and beneficial predators; insecticides only if populations exceed economic threshold.

Uses

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Livestock Forage

Culinary

Timothy hay is a premium forage feed for horses, cattle, and other livestock, prized for its nutritional balance and palatability. It provides essential fiber and energy for animal health and production. [source]

💊

Traditional Herbal Use

Medicinal

Timothy pollen and seed have been used in traditional herbal medicine to support respiratory health and immune function, though scientific evidence is limited. [source]

🏠

Pasture & Soil Improvement

Household

Deep fibrous root systems improve soil structure, increase water retention, and reduce erosion. Excellent for pasture renovation and establishment in cool climates. [source]

🦋

Wildlife Habitat & Food

Wildlife

Timothy provides food and cover for grassland birds, pollinators, and small mammals. Seedheads are an important food source for finches and other seed-eating birds. [source]

🎨

Ornamental & Craft Plantings

Craft

The distinctive cylindrical seedheads are attractive in dried flower arrangements and naturalistic landscape designs. Valued in native meadow plantings. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

For hay: Cut when seedheads are fully emerged but before flowers fully open (boot to early anthesis stage); this provides best nutritional value (12-14% crude protein). Cut 2-3 inches above ground to preserve regrowth. Dry hay thoroughly (below 20% moisture) before baling. For pasture: Graze when plants reach 6-8 inches tall; rotate paddocks to allow 4-6 week recovery between grazings. For seed: Allow heads to fully mature and turn brown; cut and cure before seed shatters.

Fun Facts

  • 🌱 'Climax' is one of the most widely used Timothy cultivars in North America, bred specifically for superior yield and persistence in cool-season forage systems.
  • 🌱 Timothy grass was named after Timothy Hanson, an American farmer who promoted the grass in the colonial era (1700s), though it has been cultivated in Europe for centuries.
  • 🌱 A single mature timothy plant can produce 1,000-2,000 seeds per flowering stem, allowing for prolific natural reseeding and establishment in pastures.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Annual Cultivar Full Sun Partial Shade Perennial pH
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