How to Grow Flowering Herbs (Borage, Thyme, Oregano)

Flowering Herbs (Borage, Thyme, Oregano)

Borago officinalis, Thymus vulgaris, Origanum vulgare

herb

A trio of Mediterranean and cool-climate herbs prized for both culinary use and their abundant flowers that attract pollinators. Borage produces bright blue star-shaped flowers, while thyme and oregano offer delicate pink, purple, or white blooms. Together, they create a pollinator-friendly herb garden that supplies fresh leaves and stunning visual interest.

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Example Flowering Herbs (Borage, Thyme, Oregano) timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Flowering Herbs (Borage, Thyme, Oregano)

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Flowering Herbs (Borage, Thyme, Oregano)

    Around Jun 16

    ≈ 60 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Flowering Herbs (Borage, Thyme, Oregano) dates for your own zip code.

Growing Conditions

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Sun: Full sun, 6-8 hours daily (all three prefer maximum light)
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Water: Moderate; water when soil surface is dry. Borage prefers slightly moist soil; thyme and oregano are drought-tolerant once established. Avoid waterlogging.
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Spacing: 12-18 inches apart (borage 12 inches; thyme and oregano 12-18 inches) inches
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Days to maturity: Borage 60-70 days to flowering; Thyme and oregano 30-40 days to usable foliage, 60+ days to prolific flowers
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Planting depth: Borage seeds: 1/4 inch deep; Thyme and oregano: surface sow or 1/8 inch deep for seeds; transplants at soil line

Soil

Type: Well-draining loamy or sandy soil
pH: 6.0-7.5
Amendments:
Compost or aged manure Perlite or sand for drainage Lime if soil is too acidic

Growing Zones

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Borage thrives in zones 2-11 (cool-season annual/biennial); Thyme and oregano prefer zones 4-9 as perennials

3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b

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Growth Stages

1

Seedling

2-3 weeks

Tiny cotyledons emerge (borage shows fuzzy texture; thyme and oregano are very fine). First true leaves appear within 1-2 weeks.

Keep soil consistently moist but not waterlogged. Provide bright light to prevent leggy growth. Thin borage seedlings to prevent crowding.

2

Vegetative Growth

3-4 weeks

Plants develop bushy foliage and strong root systems. Borage grows tall with large hairy leaves; thyme and oregano form compact mounding mats.

Water moderately. Pinch back growing tips of thyme and oregano to promote bushiness. Apply balanced fertilizer every 2-3 weeks if soil is poor.

3

Flowering

4-8 weeks (can extend into second month with deadheading)

Abundant flowers appear. Borage produces bright blue/purple star-shaped flowers on branching stems; thyme and oregano display tiny pink, purple, or white flowers in clusters.

Deadhead spent flowers to encourage continuous blooming. Reduce nitrogen fertilizer to promote more flowers over foliage. These flowers are highly attractive to bees, butterflies, and hoverflies.

4

Seed Production (if left unharvested)

2-3 weeks after flowering ends

Flowers develop into seed pods. Borage forms rounded seed heads; thyme and oregano develop small papery seed capsules.

Allow some flowers to mature fully if you wish to collect seeds or let plants self-seed. Harvest seeds when dry and papery. Thyme and oregano may re-sprout for a second flush if cut back.

5

Harvest & Maintenance

Ongoing throughout growing season

Plants are in full productivity, ready for regular leaf and flower harvesting.

Harvest borage leaves and flowers before they become tough. Cut thyme and oregano stems just above leaf nodes to maintain shape. In autumn, cut back thyme and oregano by 1/3 to prepare for winter dormancy.

Companion Planting

Plan your garden →

Plant with:

Avoid planting near:

Fennel (inhibits growth of most herbs) Kochia Dill (may cross-pollinate undesirably with fennel family)

Common Pests

  • Spray with water to dislodge; use insecticidal soap; encourage beneficial insects like ladybugs and lacewings. Neem oil as a last resort.

  • Increase humidity; spray with water; use miticides if severe. These prefer dry conditions, so regular misting helps.

  • Use yellow sticky traps; spray undersides of leaves with neem oil or insecticidal soap. Remove heavily infested leaves.

  • Improve air circulation; avoid overhead watering; spray with sulfur dust or potassium bicarbonate fungicide if severe.

  • Ensure excellent drainage; avoid overwatering; remove affected plants. Use well-draining soil with perlite or sand.

Uses

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Fresh Cooking & Teas

Culinary

Borage leaves add a fresh, cucumber-like flavor to salads, beverages, and cocktails; the edible flowers are stunning garnishes. Thyme and oregano are classic Mediterranean cooking herbs—use fresh or dried in soups, stews, pasta sauces, and grilled vegetables. All three make excellent herbal teas. [source]

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Traditional Herbal Remedies

Medicinal

Borage is traditionally used for its omega-6 rich seeds and anti-inflammatory properties. Thyme has been used as an expectorant for cough and cold relief, and oregano contains carvacrol and thymol, powerful antimicrobial compounds. Consult healthcare providers before medicinal use. [source]

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Pollinator Support

Wildlife

These flowering herbs are exceptional nectar and pollen sources for honeybees, bumblebees, butterflies, hoverflies, and other beneficial insects. Borage is particularly favored by bees throughout its blooming period. Planting these creates a thriving microhabitat for pollinators. [source]

🏠

Essential Oils & Aromatics

Household

Dried thyme and oregano release aromatic essential oils that freshen indoor spaces and can be used in potpourri, sachets, or herbal bundles. Borage flowers can be pressed for decoration in crafts. [source]

🎨

Edible Flowers & Decorations

Craft

Borage's brilliant blue flowers are prized for wedding cakes, cupcakes, and fine dining presentation. Thyme and oregano flowers add delicate color to salads and plated dishes. All can be pressed, dried, or candied for craft and decoration projects. [source]

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

Harvest Tips

Harvest borage leaves when young and tender (4-6 weeks after planting); older leaves become tough and hairy. Pick flowers anytime they open—best in early morning. Harvest thyme and oregano leaves just before flowering for maximum flavor and essential oil content; pinch or cut stems to encourage bushiness. Both thyme and oregano can be harvested repeatedly throughout the season. Dry herbs by hanging bundles in a warm, airy location or using a dehydrator at 95-115°F. Fresh flowers can be used immediately or candied.

Fun Facts

  • 🌱 Borage flowers are beloved by bees to such an extent that the plant is called a 'bee plant' or 'bee bread'—a single borage flower can produce up to 1.9 mg of nectar daily, making it one of the most productive nectar sources in temperate gardens.
  • 🌱 Thyme and oregano are nearly identical plants (same genus Thymus and Origanum, both in the mint family), yet oregano is generally stronger-flavored and more aromatic. The main culinary difference is that oregano became associated with Italian and Greek cuisine, while thyme with French cooking.
  • 🌱 Borage is self-seeding; if you let one plant flower and set seed, you may find borage seedlings appearing spontaneously around your garden the following year, making it a renewable herb source with minimal effort.

Gardening Terms

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

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