- Name: Summer Carnival Hollyhock - Scientific Name: Alcea Rosea 'Summer Carnival' - Color: Mixed Colors (Double Blooms) - Red, Pink, White, Yellow, Crimson, Rose, & Peach - Plant Seeds: Outdoors After Frost / Indoors Weeks Before Last Frost - Bloom Time: Mid Summer – Fall - Hardiness Zone: 2 – 9 - Plant Height: 48 - 60" - Plant Spacing: 18" - Light Requirements: Sun - Soil & Water Preferences: Average - Quantity: 50 Seeds - Other: As You Can See, Hollyhocks Get Quite Tall, So They Are Right At Home In The Back Row Of Your Flower Garden. Their Tall Upright Stalks Are Covered From Top To Bottom With Endless Blooms In Stunning Shades. Every Summer, I Never Cease To Be Amazed At Their Loveliness Towering Over Me, And I Never Tire Of Watching The Bumble Bees Roll Around In Their Blooms Delighting In Being Covered In Pollen. Hollyhocks Are Easy To Grow, Grow Quickly, And Require Basically No Attention Once They Have Taken Off. - The Huge 3 1/2" Double Flowers Of Summer Carnival Are Extremely Showy, Covering The Stalks Top To Bottom With Tons Of Blooms In Mid Summer. The Buds Open From The Bottom & Work Their Way Up To Give You A Nice Long Bloom Time. Cut Some To Enjoy Indoors, Or Leave Them Outside To Share With The Bees, Butterflies, & Hummingbirds That Will Be Equally Delighted With Their Blossoms.