98 – 105 days. Madness Series petunia seeds are an easy way to splash some early-blooming and exotic accent to your home or garden all season long. Madness petunia seeds promise stunning 3” wide blooms bursting with over 20 eye-catching colors to choose from. Madness Series petunias mature into neat 10 – 15” tall mounded uprights perfect as a tidy grow for borders, edging, ground cover, or hanging baskets. Madness petunias are easy to grow from seed and are an ideal way to rejuvenate any tired flower bed, porch, or office. 1000 pelleted seeds.
Growing Madness Series Petunia Garden Seeds
- Taxonomy: Petunia x hybrida
- Other Names: Floribunda Petunia
- Seed Type: Annual (Perennial in zones 10 – 11)
- Sow Indoors or Outdoors: For earliest blooming, start Madness Series petunia seeds indoors 10 – 12 weeks before the final frost and transplant once there are two sets of true leaves. Madness Series seeds will germinate within 14 days with full lighting. If transplanting outside, harden off seedlings into a partially shaded spot in the garden, or an equally moderate place indoors.
- Days to Maturity: 98 – 105 days
- Hardiness Zone: 6 – 11
- Planting Depth: Plant 2 – 3 seeds ¼” deep
- Plant Spacing: 8 – 10”
- Growth Habit: 10 – 15” tall mounding uprights with a 10 – 12” wide spread of classic 3” blooms
- Soil Preference: Average, medium moist, well-drained
- Light Preference: Full sun – Partial shade
- Diseases/Pests/Troubleshooting: Avoid overhead watering to minimize wetting foliage as Madness Series petunia seeds are susceptible to fungal and leaf diseases and gray mold if not properly ventilated. Plants are known to be susceptible to blight and tobacco mosaic virus, since Petunia x hybrida is closely related to the tobacco plant. Madness Series petunias will benefit from shade and deadheading as they begin to decline as autumn nears. Petunias have no serious pests, but monitor regularly for aphids, flea beetles, slugs and snails.
For earliest blooming, begin Madness Series petunia seeds indoors 10 – 12 weeks before the final frost and transplant once there are two sets of true leaves. Madness Series seeds will germinate within 14 days with full lighting. If transplanting outside, harden off seedlings into a partially shaded spot in the garden, or an equally moderate place indoors. Plant 2 – 3 Madness Series petunia seeds ¼” deep and 8 – 10” apart in average, medium moist, and well-drained soil in full sun to partial shade. Avoid overhead watering to minimize wetting foliage as Madness Series petunia seeds are susceptible to fungal and leaf diseases and gray mold if not properly ventilated. Plants are known to be susceptible to blight and tobacco mosaic virus, since Petunia x hybrida is closely related to the tobacco plant. Madness Series petunias will benefit from shade and deadheading as they begin to decline as autumn nears. Petunias have no serious pests, but monitor regularly for aphids, flea beetles, slugs and snails. Madness Series seeds mature in 98 – 105 days as 10 – 15” tall mounding uprights with a 10 – 12” wide spread of classic 3” blooms.
Second only to impatiens in annual bedding plant sales, the petunia has been a popular plant for many years due in large part to its ease of culture and non-stop flowering from spring to frost. Petunia is a genus of 20 species native to South America and the genus is loosely derived from an old Guarani word meaning “tobacco” since the two plants are both in the nightshade family.




















