Send us your address for a complimentary pack of heirloom vegetable seeds!

Tips from the St. Supéry Estate Garden

Know your growing zone before planting, this will impact your seeding schedule!!

Click on the map to learn about your growing zone!

USDA Plat Hardiness Map

In Your Seed Packet


In this packet, you will find three different varieties: Early Girl (A medium-sized, early ripening slicing tomato), Indigo Cherry Drops (a dark purple cherry tomato), and The Striped German (A large marbled heirloom)


This packet contains Allstar Gourmet Lettuce Mix.  Includes: green oakleaf, red oakleaf, green romaine, red romaine, lollo rossa, and red leaf.


Edible Flowers

This packet contains Jewel Mix Nasturtium. A beautiful array of

edible leaves and flowers that give off a peppery flavor!


For the best results, it is recommended that all seeds be started indoors as transplants. Fill pots with a seed starter mix and some organic matter: compost, store-bought fertilizer, etc. Then direct sow half an inch deep. Water the pots lightly daily and leave them in a sunny spot. Once transplants have reached about 3-4 inches in height, harden them off by placing them outside in the shade, then gradually increasing the amount of sunlight throughout the week. Two weeks before transplanting, choose a spot in full sun, dig a hole a foot deep, and mix in compost or manure. Once the last frost ends (usually March in zone 9b), you are safe to plant. Finally, transplant tomatoes deep enough to cover the root ball with the bottom leaves just above the surface. The spacing should be 2-3 feet apart. Water deeply the first few days, 2 inches a week for the growing season.


 However, if you choose to direct sow then the soil temperature must be around 70 degrees. In Napa zone 9b this occurs around the end of May. Direct seed ½ inch deep in a sunny spot, with soil rich in nutrients. Make sure to give each plant at least 2 feet of space.


These tomato varieties are all indeterminate, which means they produce a strong leafy structure and should be staked. Place stakes during planting, and tie plants with a soft stretchy material such as nylon, or an old strip of a t-shirt.


Lettuces are best if direct sown. Optimal germination temperature ranges from 40-75 degrees. The best in 60-68 degrees in soil temperature,


For spring harvest: seed in March, April, and early May for zone 9b. For winter harvest: seed in Late October or November.


Once you have a prepped area, you can broadcast seeds over a large area or sown in single rows. If you broadcast, thin seedlings to 8 inches apart after they sprout, allowing room for full head growth. Water lightly daily for best germination and fast growth.


Harvest early in the morning at baby leaf size for the best flavor

Days to Maturity 18-28


Good companion plant to the following: bean, broccoli, cabbage, cucumber, kale, melon, pumpkin, and radish


It is strongly recommend to direct seed in a container, in either full or part sun. Also can be sown in the ground in between crops.


Nasturtiums germinate when the soil temperature is 55° and 65°F which is around mid-April in Zone 9b. They do well in poor soil, however, they prefer soil that is well-draining.


Sow ½ deep, 10-12 inches apart . They bloom summer through fall. 55-65 days until maturity.

Veggie Forward Recipes from The Estate Kitchen

Garden Updates from the St. Supéry Estate Blog


8440 St. Helena Highway
PO Box 38
Rutherford, CA 94573
(707) 963-4507

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