Zone 9 - What to Plant in September

Zone 9 - What to Plant in September

September is one of the best months to start gardening in Zone 9. You're just past the dog days of summer and the weather is starting to cool down a bit. The typical first frost in Zone 9 is mid December but even then it can be very mild. This allows for easy winter growing of several crops. Below is a list of items that can be planted in zone 9 in September.

Lolla Rossa lettuce is a beautiful Italian heirloom variety originating from the Lolla region near Bergamo, known for its striking deep-red, frilly leaves and crisp texture. Typically forming compact, loose-leaf rosettes about 6 to 8 inches across, it adds vibrant color and visual appeal to salads and garden beds alike. The leaves are tender yet slightly crunchy, offering a mild, slightly bitter flavor with a subtle nutty finish. Lolla Rossa thrives in cool weather and prefers full sun with well-drained, fertile soil rich in organic matter. It grows best in temperatures between 45–70°F and benefits from consistent moisture, making it ideal for spring and fall planting.

Tall Utah celery, developed in the early 20th century in Utah, is renowned for its tall, sturdy stalks and exceptional flavor. This variety features vibrant green, crisp stalks that can reach heights of 18-36 inches, making it a standout in gardens. The taste is mild and slightly sweet, perfect for fresh eating or cooking in a variety of dishes. Harvesting typically occurs 85-100 days after planting, when the stalks are firm and well-developed; gardeners can choose to cut the entire plant or selectively harvest individual stalks as needed. Tall Utah celery thrives in cool climates and requires consistent moisture, making it a favorite for both home growers and commercial producers.

The Early Purple Sprouting broccoli is an heirloom broccoli bred for overwintering! This variety produces lots of beautiful purple broccoli sprouts in the spring. The Early Purple Sprouting grows slowly through the winter; very frost hardy.

The Viroflay Spinach is a gourmet French heirloom that was developed prior to 1866. The big, smooth leaves of this Spinach variety is a deep green color and grows up to 10 inches long. This very fast growing plant is popular for fall planting.

The Green express is a bright green mini cabbage with excellent flavor! This favorite is now available as organic. The early maturing cabbage has a mild flavor and crisp texture that can't be beat. The Green Express can be sown directly in Fall gardens or transplanted in Spring.

Iceberg Lettuce is the tried and true lettuce that is an easy to grow, slow bolting crisphead. This variety has proven to be one of the most popular crispheads for years! Iceberg is a great lettuce that performs exceptionally well under warm weather conditions. This compact lettuce plant features better leaf texture and quality than other varieties. This variety resists rib discoloration and tip burn.

The Optima Lettuce is a large-framed Boston type that produces dark green leaves that have excellent heat tolerance and will resist bolting. This variety is known for being resistant to tip burn as well as races 1-4 of mildew. This great lettuce also has a juicy, crisp flavor that is amazing cut up in salads or on sandwiches!

The Dwarf Grey Sugar Pea is one of our customer favorite peas! Produces an abundance of attractive purple and blue flowers. These flowers are edible, have a light pea flavor and look great on many dishes. The mature peas are very flavorful and is ideal for steaming, stir-frying or eating fresh out of the garden. Dwarf Grey Sugar Pea is suitable for northern and southern regions, as it is tolerant to heat and cold.

Minowase radish seeds produce a classic Japanese daikon variety with origins in East Asia, where long-rooted radishes have been cultivated for centuries for their productivity and versatility. Known for its smooth white roots that often reach 12–18 inches, Minowase features crisp, juicy flesh with a mild, slightly sweet, lightly peppery flavor that is far gentler than smaller spring radishes. Its clean taste and firm texture make it ideal for microgreens, sprouts, salads, pickling, stir-fries, soups, fermenting, and even grating fresh as a condiment. This variety grows best in cool weather and loose, deeply prepared soil that allows for long, straight roots; sow seeds directly in late summer or early fall, provide consistent moisture, thin seedlings to prevent crowding, and harvest before hard frosts for the best quality.

The Cheddar cauliflower lives up to its name with its awesome cheddar color and great flavor! This cauliflower is a novelty, orange curd that is high in beta-carotene. A mid-size plant, domed head, and is very productive in the fall. Fun to watch grow and eat!

The Purple Plum is an amazing purple skinned radish with a crisp, mild and sweet white flesh! This unique radish is different from the "typical" radish coloring. This small round shaped radish is early to harvest, which makes it great for home and market growers. Purple Plum is a nice variety to blend with other colors in mixes!

The Knight Pea is the highest yielding, early maturing pea that we have! This pea variety's vines are short and therefore require no staking. Its huge pods can grow to be 4 inches with up to 10 peas in each pod! Knight is a favorite for its tender and sweet flavor, making it the perfect side dish.