Gladiola Flower Seeds Packet

$2.35

2025 Seed Prices

  • Order 1-95 assorted packets for $2.35 each
  • Order 96-499 assorted packets for $1.85 each
  • Order 500 or more assorted packets for $1.65 each
Gladiolus, commonly known as glads, is a strikingly beautiful flowering plant that belongs to the Iris family. Known for its tall, sword-shaped leaves and vibrant, funnel-shaped flowers, the gladiolus adds a bold touch to gardens and floral arrangements. Gladiolus is a stunning and versatile flowering plant that thrives in full sun and well-drained soil. Whether grown for landscaping, floral arrangements, or pollinator attraction, this low-maintenance plant adds color and elegance to any garden. While growing gladiolus from corms is faster, planting from seeds requires patience but can be a rewarding process.
SKU: SEGLAD
Barcode: 843458152606

Product Detail

Order in multiples of: 12

  • Year Designed: 2024
Quick Seed Overview
  • Plant Type: Perennial (grown as an annual in colder climates)
  • Genus: Gladiolus
  • Species: Gladiolus spp.
  • Plant Height/Width: 2 to 5 feet tall / 6 to 12 inches wide
  • Season: Summer to early fall
  • Exposure: Full sun (at least 6-8 hours of direct sunlight per day)
  • Difficulty: Easy to moderate

Why Shido Seeds Are the Best

Our flower and vegetable seeds are beautifully packaged little packets of magic. Guaranteed to turn your garden into the envy of the neighborhood. Get your hands dirty and let nature simply do its thing.

How to Plant Gladiola from Seed

When to Plant Seeds

Start seeds indoors 8-10 weeks before the last frost.

Germination take 3-4 weeks. Once seedlings have two sets of true leaves, transplant them into larger pots.

Preparing for Planting

Fill trays or small pots with a well-draining seed-starting mix.

Sow seeds ¼ inch deep and lightly cover with soil. Keep the soil moist but not waterlogged. Place trays in a warm, bright location (70-75°F/21-24°C).

When to Transplant

Once seedlings are 4-6 inches tall and the danger of frost has passed, they can be moved outdoors. Gradually expose seedlings to outdoor conditions for 7-10 days.

Transplanting

Plant 6-8 inches apart in well-prepared garden beds. Ensure the soil is rich and moist. Water thoroughly after transplanting.

Pro Tip

For stronger, straighter flower spikes, plant gladiolus in groups rather than single rows and stagger planting every two weeks for continuous blooms throughout the season. Also, staking taller varieties and planting them in a wind-protected area will help prevent bending or breakage.

Getting to know your Gladiolous

Gladiolus, often called "glads," is a striking flowering plant known for its tall, sword-like foliage and vibrant, showy blooms. Native to South Africa and the Mediterranean, gladiolus belongs to the iris family (Iridaceae) and is a popular choice for both garden beds and floral arrangements. The plant grows from corms (bulb-like structures) and produces long, vertical flower spikes adorned with trumpet-shaped blossoms in a wide range of colors, including red, pink, yellow, white, orange, purple, and even bi-colored varieties. These blooms open from the bottom up, creating a stunning, sequential display of color.

Gladiolus thrives in full sun and well-drained, fertile soil. It is typically grown as an annual in colder climates, as the corms must be lifted and stored over winter to prevent frost damage. The plant prefers warm temperatures and requires consistent watering, especially during its active growing season. Taller varieties may need staking to support their impressive height, which can range from 2 to 5 feet.

These flowers are commonly used in cut flower arrangements due to their long vase life and striking vertical presence. In gardens, gladiolus is often planted in rows or clusters for a dramatic effect. The plant attracts pollinators such as bees and butterflies but is relatively resistant to pests. With its stunning, elegant appearance and relatively easy care requirements, gladiolus remains a favorite among gardeners and florists alike.

What it's used for

1. Ornamental Landscaping

  • Gladiolus is a favorite in flower beds, borders, and cutting gardens.
  • The tall flower spikes create a dramatic focal point in garden designs.

2. Cut Flowers

  • Gladiolus is widely used in floral arrangements, bouquets, and decorations.
  • The flowers can last up to two weeks in a vase with proper care.

3. Symbolism and Special Occasions

Gladiolus flowers symbolize strength, integrity, and remembrance.

They are popular in funeral arrangements, weddings, and special events.

Growth Requirements

Light

  • Gladiolus thrives in full sun, requiring at least 6 to 8 hours of direct sunlight daily.
  • Partial shade may reduce flowering and lead to weaker stems.

Soil

  • Prefers well-draining, sandy or loamy soil enriched with organic matter.
  • Ideal soil pH: 6.0 - 6.5.
  • Heavy clay soil should be amended with compost or sand for better drainage.

Watering

  • Needs consistent moisture but should not be overwatered.
  • Water deeply once a week, ensuring the soil is moist but not soggy.
  • Mulching around the plants helps retain moisture and suppress weeds.

Temperature & Climate

  • Gladiolus grows best in temperatures between 60°F and 80°F (15°C - 27°C).
  • In colder climates, corms must be dug up and stored indoors over winter.
  • Protect from strong winds, as tall flower spikes can bend or break.

Fertilization

  • Use a balanced fertilizer (10-10-10) before planting and a low-nitrogen fertilizer as the plants grow.
  • Apply fertilizer every 2-3 weeks for optimal flowering.
Maintenance

Mulching

  • Apply a layer of organic mulch (straw, bark, or compost) to retain moisture and prevent weed growth.

Staking Tall Varieties

  • Gladiolus with tall flower spikes may require staking to prevent bending or breaking.

Deadheading and Pruning

  • Remove faded blooms to encourage further blooming.
  • Cut flower stems at the base after blooming is complete.

Overwintering in Cold Climates

  • Dig up corms before the first frost and store them in a cool, dry place until spring.

Harvesting

  • Cut flowers when the lowest bloom opens, leaving at least 4 leaves on the plant.
  • Use a sharp knife to cut at an angle, ensuring a longer vase life.
  • Place in clean water immediately and change water every 2-3 days.

Pests and Diseases

Common Pests:

Thrips: Cause deformed flowers; control with neem oil or insecticidal soap.

Aphids: Rinse off with water or apply natural predators like ladybugs.

Common Diseases:

Botrytis (gray mold): Improve air circulation and avoid overhead watering.

Fusarium rot: Use well-draining soil and avoid excessive moisture.

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Pretty Pots for Pretty Plants

Your plants work hard to look good—shouldn’t their pots do the same? Choose from our gorgeous flower pots and let your greenery thrive in style. Because plain plastic is just rude.