Raspberry Blast

Family: Solanaceae Garden Petunia

Planting Schedule

Provide your location or planting zone to unlock dates and add Raspberry Blast to a garden.

Raspberry Blast spills into view with a velvety rush of raspberry-red blooms that glow against soft, leafy green—each flower a bright, velour-like trumpet that seems to catch the light from every angle.

The trailing, spreading habit makes it ideal for cascading over edges, where the continuous flush of color creates a living waterfall from early summer through fall. Grow it for show-stopping color in hanging baskets, window boxes, and patio planters, and enjoy the nonstop ornamental presence it brings to your garden display.

Light: Full SunMaturity: 70 DaysHabit: Spreading

Botanical illustration of Raspberry Blast

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Raspberry Blast Planting Dates by USDA Zone

Estimated US hardiness-zone windows for sow, transplant, and harvest. Enter a US ZIP above for exact local dates, or open a zone below.

Zone	Start Indoors	Sow / Transplant	Harvest
Zone 1a	Protected Environment Only
Zone 1b	Protected Environment Only
Zone 2a	Mar 16th	Jun 8th	Aug 17th – Aug 29th
Zone 2b	Mar 6th	May 29th	Aug 7th – Aug 25th
Zone 3a	Mar 6th	May 29th	Aug 7th – Sep 1st
Zone 3b	Mar 10th	Jun 2nd	Aug 11th – Sep 21st
Zone 4a	Mar 6th	May 29th	Aug 7th – Sep 24th
Zone 4b	Mar 4th	May 27th	Aug 5th – Sep 27th
Zone 5a	Feb 27th	May 22nd	Jul 31st – Sep 30th
Zone 5b	Feb 23rd	May 18th	Jul 27th – Oct 5th
Zone 6a	Feb 20th	May 15th	Jul 24th – Oct 10th
Zone 6b	Feb 14th	May 9th	Jul 18th – Oct 16th
Zone 7a	Feb 9th	May 4th	Jul 13th – Oct 20th
Zone 7b	Jan 30th	Apr 24th	Jul 3rd – Oct 28th
Zone 8a	Jan 21st	Apr 15th	Jun 24th – Nov 5th
Zone 8b	Jan 12th	Apr 6th	Jun 15th – Nov 12th
Zone 9a	Dec 26th	Mar 20th	May 29th – Nov 26th
Zone 9b	Dec 1st	Feb 23rd	May 4th – Dec 9th
Zone 10a	Continuous Production
Zone 10b	Continuous Production
Zone 11a	Continuous Production
Zone 11b	Continuous Production
Zone 12a	Continuous Production
Zone 12b	Continuous Production
Zone 13a	Continuous Production
Zone 13b	Continuous Production

Crop Details

Trait	Value
Days to Maturity	70
Sun Requirements	Full Sun
Growth Habit	Spreading
Support Needed	None
Planting Depth	Surface
Germination Temp (°F)	75
Min Soil Temp (°F)	60
Min Night Temp (°F)	55
Harden Off (days)	7

Frequently Asked Questions

What pests or diseases commonly hit Petunia × atkinsiana (your “Raspberry Blast”) and how can I control them at home?

Watch for aphids and whiteflies, which can show up as sticky leaves and reduced vigor; spray plants with a strong jet of water, then use insecticidal soap or neem and repeat every 5–7 days until activity stops. Also monitor for botrytis/gray mold, especially in humid weather or if foliage stays wet—remove affected blossoms/leaves, improve airflow by spacing plants, and water only at the soil line in the morning.

How often should I water Petunia × atkinsiana during its main growing phase (around weeks 3–10)?

Water so the top 1 inch of soil dries slightly between waterings, then soak thoroughly until excess drains; in full sun, this often works out to about 1–2 times per week depending on heat and container size. Avoid keeping the root zone constantly wet, since petunias in the Solanaceae family are prone to fungal issues when foliage and soil stay wet too long.

How do I know when Petunia × atkinsiana is ready to harvest?

Petunia × atkinsiana is typically grown for flowers rather than a harvested edible crop—start “harvesting” by picking spent blooms as soon as they fade, which encourages new flowering. If you’re harvesting seeds, let pods dry on the plant after flowering, then collect when pods turn papery and start to split, usually around the 70-day season window from sowing.