Nearly all zone 9 herbplants require well-drained soil and tend to rot when conditions are soggy. As a general rule, don’t water until the top 2 inches (5 cm.) of soil feels dry to the touch. Perfect for gardeners of all skill levels, perennial herbs making gardening a total, hassle-free joy that saves you both time and money. Get planting tips, suggested uses, and USDA zone... You can find your plantingzone using the USDA Plant Hardiness Zone Map online. Just enter your zip code to get detailed zone information. When is the best time to plantherbs outdoors? Shop the best selection of top-quality herbs, vegetables, potted live plants, seeds, dried herbs, herbal teas, essential oils, and more! Richters offers 1,000s of organic, heirloom, and rare... Then refer to our temperate zoneplanting guide! It’s so easy, just locate your zone on the map and discover all the delicious produce you can be enjoying. It can be challenging to grow plants in this harsh environment, but there are a few cold-hardy perennial herbs that may survive in zone 2 4. How to PlantHerbaceous Peonies. New herbaceous peony plants should be planted 2.5 to 3 feet apart on center, and approximately 1.5 feet from any edge. Plant sunflowers on the north side of garden beds, so their height adds drama without blocking the sun from smaller plants. 2 Ornamental Grasses That Soften Modern Spaces. From heat waves to strong all-day sun, nothing can stop these bright bloomers! Take a look at this list of container plants for full-sun conditions.