Sweet William
Dianthus barbatus

Sweet William performs well in a rock garden or raised bed with excellent drainage.  Its small, carnation-like flowers in shades of pink, brick red, lavender, and maroon sit atop gray-green foliage.  

When to Plant Outdoors
Install in a sunny location two weeks before the last expected frost.  To maximize performance, start this cool weather bloomer indoors.

Moisten prepared soil thoroughly.  Using scissors, cut seed mats as desired.  Each mat can yield 2, 3, 6, or 12 sections depending on your needs.  Now, place each section where desired on the moistened soil and water thoroughly.  Seed in a Blanket® is designed to hug the ground when moistened so it will stay in place.  At this point, it cannot be lifted up in one piece.  Do not cover mat with soil.

Water frequently to keep seed mat moist until the second set of leaves are fully extended.  Do not let the mat dry out.  Germination should occur within 1 to 2 weeks depending upon weather and soil conditions. 

When to Start Indoors
In a warm, well-lit location, start 8 to 10 weeks before the last expected frost.  Using scissors cut each mat into 6 to 12 sections as desired.  Place sections on well moistened soil-less potting mix in containers that allow good drainage.  Water until the mat is thoroughly moistened and hugs the planting medium.  Water evenly and do not let the mat dry out.  Expect germination within 1 to 2 weeks.

After the second set of leaves are fully extended, transplant seedlings into individual pots.   Pinch off any blooms from seedlings to direct growth into strong roots.  When nighttime temperatures are regularly above 35 degrees, move to a shady and protected area outside for one week before installing in its intended position in the garden.  This is an important step that will allow the seedlings to adjust to conditions outside.

Tip – Keep planting area weed-free and remove blooms from plants when past their prime to promote extended blooming.  

See Garden Basics for more helpful tips and techniques.