← Plant Guides

How to Grow Petunia Grandiflora Superbissima Veined Varieties Mixed Colors

Wikimedia Commons

Petunia Grandiflora Superbissima Veined Varieties Mixed Colors

Petunia ×hybrida

flower

A stunning hybrid petunia featuring large, ruffled flowers with striking vein patterns in mixed colors, combining deep throats with lighter veining throughout the petals. These grandiflora types produce showy blooms ideal for containers, hanging baskets, and garden displays. The superbissima form adds distinctive bicolor veining that creates eye-catching visual appeal.

When should you plant Petunia Grandiflora Superbissima Veined Varieties Mixed Colors in your zone?

Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.

Get my Petunia Grandiflora Superbissima Veined Varieties Mixed Colors timeline →

Example Petunia Grandiflora Superbissima Veined Varieties Mixed Colors timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Petunia Grandiflora Superbissima Veined Varieties Mixed Colors

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. First Petunia Grandiflora Superbissima Veined Varieties Mixed Colors blooms

    Around Jun 16

    ≈ 60 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Petunia Grandiflora Superbissima Veined Varieties Mixed Colors dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 6-8 hours daily; tolerates light afternoon shade in hot climates
💧
Water: Keep soil consistently moist but not waterlogged; water at soil level to avoid wetting foliage; reduce watering slightly once established
📏
Spacing: 12-18 inches
📅
Days to maturity: 60-90
🌱
Planting depth: Surface sowing; press seeds lightly into soil, do not cover as they need light to germinate

Soil

Type: Well-draining, fertile loamy soil
pH: 6.0-6.8
Amendments:
compost peat moss perlite aged manure

Growing Zones

Find your zone →

Thrives in zones 3-11, grown as annuals; perennial in zones 10-11

3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b

Sign up free to see if Petunia Grandiflora Superbissima Veined Varieties Mixed Colors grows in your zone — and get a personalized planting timeline.

Get my Petunia Grandiflora Superbissima Veined Varieties Mixed Colors timeline →

Growth Stages

1

Seedling

7-14 days

Tiny seedlings emerge with cotyledons; very delicate with minimal foliage

Maintain consistent moisture and warmth (70-75°F); provide bright indirect light; avoid damping off by ensuring good air circulation

2

Vegetative Growth

3-4 weeks

Plant develops true leaves and compact bushy form; stems strengthen and branch out

Pinch growing tips at 3-4 weeks to encourage branching; fertilize weekly with balanced fertilizer; harden off before transplanting outdoors

3

Pre-Flowering

2-3 weeks

Plant continues to fill out; first flower buds begin to form at branch tips

Continue pinching if needed for bushier form; maintain consistent watering; switch to lower-nitrogen fertilizer to encourage blooming

4

Flowering

8-12 weeks (or until frost)

Large ruffled flowers with prominent veining open continuously; mixed colors display distinctive bicolor patterns

Deadhead spent blooms regularly to encourage continuous flowering; fertilize every 2 weeks with flowering formula; maintain steady water supply

5

Late Season Decline

Variable; until first frost

Blooming may slow in extreme heat or as temperatures cool toward frost; flowers become smaller or less frequent

Reduce deadheading in fall to allow seed formation; cut back watering slightly; provide afternoon shade in hot climates to extend bloom

Companion Planting

Plan your garden →

Plant with:

salvia alyssum calibrachoa bacopa diascia scaevola dusty miller ornamental grasses verbena

Avoid planting near:

brassicas fennel dill

Common Pests

  • Spray with insecticidal soap or neem oil; use yellow sticky traps; encourage natural predators like ladybugs

  • Increase humidity by misting; spray with water to dislodge; apply insecticidal soap or neem oil if severe

  • Spray with strong water stream; use insecticidal soap; apply neem oil; introduce ladybugs or lacewings

  • Hand-pick affected buds and flowers; use Bt (Bacillus thuringiensis); reduce nitrogen fertilization

  • and

    Remove by hand; use copper barriers; set beer traps; apply diatomaceous earth; reduce watering frequency

Uses

🏠

Garden Display and Landscaping

Household

These spectacular veined petunias create dramatic focal points in containers, hanging baskets, window boxes, and garden beds. Their large ruffled flowers and striking color patterns make them ideal for mixed plantings and solo specimen displays. [source]

🎨

Cut Flowers and Floral Arrangements

Craft

The large, long-lasting blooms work beautifully in fresh cut flower arrangements, adding color and texture to bouquets. Their striking veining pattern makes them particularly attractive for wedding and special event arrangements. [source]

🦋

Pollinator Attraction

Wildlife

Petunias attract bees, butterflies, and hummingbirds to the garden, supporting important pollinator populations. The large flowers provide abundant nectar sources throughout the growing season. [source]

🏠

Container and Patio Gardening

Household

Their compact growth habit and profuse blooming make them perfect for containers, hanging baskets, and patio planters. They thrive in pot culture when provided with adequate drainage and consistent care. [source]

🍳

Edible Flowers

Culinary

While primarily ornamental, petunia flowers are technically edible with a mild, slightly spicy flavor and can be used to garnish desserts or salads. They should only be eaten if grown without pesticides intended for consumption. [source]

Harvest Tips

Petunias are ornamental flowers; deadhead blooms regularly by pinching or cutting spent flowers just below the bloom to encourage continuous flowering throughout the season. Collect seed pods in late season if desired by allowing flowers to fade and develop seed capsules; harvest when dry and brown. For cut flowers, pick in early morning when stems are full of moisture.

Fun Facts

  • 🌱 Petunia flowers come in nearly every color except true blue, and these superbissima veined varieties with bicolor patterns are bred specifically for their eye-catching vein markings that create natural art on the petals.
  • 🌱 Petunias are native to South America and were first cultivated by the Aztecs, who valued them for ornamental and medicinal purposes centuries before they became popular in European and North American gardens.
  • 🌱 Grandiflora petunias produce larger individual flowers but fewer of them, while their cousins the multiflora types produce smaller flowers in greater abundance—this variety hits a sweet spot with sizeable, showy blooms in impressive quantity.

Gardening Terms

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

Damping Off Deadhead Full Sun Hybrid Transplant True Leaves
Shop Petunia Grandiflora Superbissima Veined Varieties Mixed Colors plants and related plants at Plant Addicts →

Join 30,000 gardeners planning their gardens with LizPlants.

Get your personalized Petunia Grandiflora Superbissima Veined Varieties Mixed Colors planting timeline

Tell us your zip code and we'll calculate exactly when to start Petunia Grandiflora Superbissima Veined Varieties Mixed Colors seeds, transplant seedlings, and harvest — based on your USDA zone and local frost dates. Includes calendar reminders and printable task lists. Free to start.

Get my Petunia Grandiflora Superbissima Veined Varieties Mixed Colors timeline →