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Greek Oregano
Beginner

Greek Oregano

Origanum vulgare subsp. hirtum

Family: Lamiaceae

Greek oregano is the gold standard for pizza and Italian cooking. This perennial herb has small, fuzzy leaves packed with pungent, savory flavor.

Days to Harvest

75-90 days

Sun Needs

Full Sun (6-8+ hours)

Water Needs

low

Germination Temp

70°F optimal

Seed Starting

Start Indoors

6 weeks before last frost

Germination

7-14 days

Seed Depth

Surface sow

Light to Germinate

Yes

đź’ˇ Tip: Press seeds into surface. Keep moist until germination.

Growing Conditions

Soil Type

Well-draining, average to poor soil

pH Range

6 - 8

Spacing

12-15 inches between plants

Companion Plants
âś“ Tomatoesâś“ Peppersâś“ Beans

⚠️ Avoid planting near:

âś— Cool, moist conditions
History & Nutrition

History

The name oregano derives from the Greek "oros" (mountain) and "ganos" (joy), literally meaning "joy of the mountain"—a name the ancient Greeks gave to the aromatic herb that carpeted their hillsides. Aphrodite, goddess of love, was said to have created oregano as a symbol of happiness, and Greek brides and grooms wore wreaths of oregano at their weddings. The herb spread throughout the Mediterranean with Greek and Roman expansion, becoming fundamental to cuisines from Italy to Turkey. However, oregano remained relatively unknown in America until World War II, when returning GIs brought back a taste for the "pizza herb" they had encountered in Italy. The explosion of pizza popularity in postwar America transformed oregano from an obscure Mediterranean herb to a supermarket staple. True Greek oregano (Origanum vulgare subsp. hirtum) is significantly more pungent than common oregano, with higher concentrations of carvacrol—the compound responsible for its distinctive flavor and aroma. Mexican oregano (Lippia graveolens) is actually a different plant entirely, though it serves a similar culinary purpose in Mexican and Tex-Mex cooking. Oregano oil has gained popularity in the wellness industry for its potent antimicrobial compounds, though these are present in much lower concentrations in the culinary herb.

Nutritional Benefits

  • âś“High in antioxidants
  • âś“Contains carvacrol and thymol
  • âś“Antimicrobial properties
Climate & Temperature

Optimal Growing Temp

65°F - 80°F

Oregano thrives in warm to hot weather. Mediterranean native that loves heat and sunshine. Growth slows in cool weather but plants remain hardy.

Survival Range

40°F - 95°F

Can survive these temperatures

hardy
warm Season

Frost Note: Very cold hardy once established (zones 5-10). Dies back to ground in cold winters but regrows reliably from roots in spring. Mulch in coldest zones.

Best USDA Zones

Zone 5Zone 6Zone 7Zone 8Zone 9Zone 10

Humidity

30-50%

Prefers low to moderate humidity. Excellent drainage and air circulation essential in humid climates. Mediterranean herb adapted to dry conditions.

Plant Size & Growth

Height

12-24 inches

Spread

18-24 inches

Growth Habit

spreading

perennialRoot Depth: Fibrous root system (8-12 inches). Spreads moderately via underground stems in favorable conditions.
Growth Stages

Germination

7-14 days

Tiny seedlings emerge slowly. Seeds need light and warmth for best germination. Do not cover seeds deeply.

Seedling Stage

Duration: 4-6 weeks

True leaves: First true leaves are small, oval, and aromatic. Grow slowly at first but accelerate once established.

Transplant ready: Transplant when 3-4 inches tall with 2-3 sets of true leaves (8-10 weeks from sowing).

Vegetative Growth

Duration: Continuous during growing season

Forms spreading mounds of aromatic foliage. Pinch regularly to encourage bushy growth and delay flowering. Harvest leaves anytime.

Flowering

Timing: Mid to late summer

Duration: 4-6 weeks

Small white or pink flowers extremely attractive to bees and butterflies. Self-fertile.

Harvest Maturity

Timing: 70-90 days to harvest

  • Dense, bushy growth
  • Strong oregano fragrance
  • Ready to flower
Expected Yield

Per Plant

2-4 cups fresh leaves per plant over the season. Mature plants produce abundantly.

Per Square Foot

1-2 plants per square foot (plants spread to fill space)

Harvest Frequency

Harvest continuously every 1-2 weeks. Cut up to 1/3 of plant at once. Heaviest harvest just before flowering.

Factors Affecting Yield

  • •Full sun produces strongest flavor
  • •Lean soil concentrates essential oils
  • •Regular harvesting increases production
  • •Hot, dry weather enhances flavor
Watering Guide

Seedling Stage

Keep soil lightly moist until established. Water gently to avoid disturbing tiny seeds.

Established Plants

Water when soil is dry 1-2 inches deep. Typically every 5-7 days. Oregano is drought-tolerant once established.

During Fruiting

Reduce watering slightly during flowering to concentrate flavor.

Preferred Method

Water at soil level only. Never wet the foliage. Drip irrigation ideal. Excellent drainage essential.

Pro Tips

  • Less is more—oregano prefers dry conditions
  • Better to underwater than overwater
  • Good drainage more important than regular watering
  • Mediterranean herbs evolved in dry rocky soil
Fertilizing Guide
light feederRecommended: Low or none—balanced 5-5-5 if needed

Feeding Schedule

Planting

Light compost

Once at planting

Established

Compost tea or very dilute fertilizer

Once in spring (optional)

Organic Options

Light compostWorm castingsFish emulsion (diluted)

Oregano needs minimal fertilizer. Lean soil produces the most flavorful leaves. Overfertilizing creates lush but tasteless plants.

Container Growing
âś“ Suitable for containers

Minimum Size

8 inch pot

Recommended Size

10-14 inch pot

Depth Required

At least 8-10 inches deep

Best Varieties for Containers

Greek oreganoHot & Spicy oreganoCompact oregano

Container Tips

  • Oregano thrives in containers
  • Use very well-draining soil mix with added perlite
  • Allow soil to dry between waterings
  • Can overwinter indoors in sunny window
  • Pruning keeps plants compact in containers
Frequently Asked Questions

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