Noble Giant, Spinach Seeds

Noble Giant Spinach Seed

Enormous dark leaves make this heirloom memorable
Award-winning 1933 selection remains easy to grow
Slow bolting helps extend productive cool-season harvests
Flavorful leaves suit salads, cooking, canning, or freezing

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Key Attributes

Botanical Name

Spinacia oleracea

Days to maturity

46 Days

Sun

Full Sun

Packet

1000 Seeds

About Noble Giant, Spinach Seed, Spinach Seed

The Noble Giant is an old heirloom that was an All-America Selections Winner in 1933. This spinach variety produces huge, dark green leaves with a very delicious flavor. This spinach is great in salads, cooked, canned or frozen. The Noble Giant is slow to bolt and is very easy to grow, making it perfect the perfect spinach for the home gardener!

Growing details

Planting

Sow Depth

1/2"

Days to Germination

5–14 days

Germination Type

G - Cool-Soil Germination

In-row plant spacing

4-6"

Row Spacing

12-18"

Plant profile

Maturity

Spring, Fall, Winter

Life Cycle

Annual

Plant Height

18 inches

Growth Habits

Rosette

Type

SMOOTH-LEAF SPINACH

Seed & variety

Seeds Per Ounce

2,813

Color

Green

Seed Type

Heirloom

Growing Season

Cool-Season Crop

Before Planting

Spinach benefits from a full-sun location in cool weather or light afternoon shade in warmer conditions, with fertile, moisture-retentive but well-drained soil. Work in compost and prepare a fine, level, weed-free seedbed. Plan dependable irrigation and avoid fresh manure or excessive nitrogen immediately before planting.

Planting

Direct sow spinach as soon as the soil can be worked, since germination and growth are best in cool conditions. Keep the seedbed evenly moist and thin seedlings after the first true leaves form. Make succession sowings every 1–2 weeks in spring, then sow again in late summer. Avoid hot-soil planting, which causes poor germination and rapid bolting.

Watering

Spinach needs steady moisture for rapid, tender growth. Water deeply before plants wilt, keeping the root zone moist but not waterlogged and directing irrigation below the leaves.

Fertilizer

Spinach benefits from moderate nitrogen during active leaf production. Side-dress lightly when needed, following soil-test and label recommendations, and avoid concentrated fertilizer against plants.

Harvesting

Harvest outer spinach leaves once they are large enough to use, leaving the center intact for regrowth. Cut entire plants before heat triggers bolting, preferably during the cool morning for crisp leaves.

Tips

Extend the spinach season with row cover in cold weather and afternoon shade during heat. Keep weeds controlled and sow short rows repeatedly instead of one large planting.

AVG. Seeding Rate

For baby leaf: 1M/25', 5M/125', 1,200M/acre at 40 seeds/ft. in rows at least 2" apart. For full-size leaves: 10M/1,000', 290M/acre at 10 seeds/ft. in rows 12–18" apart.

Pests & Diseases

Downy mildew, white rust, damping-off, and viruses are major spinach diseases. Select resistant varieties matched to current races, use clean seed, and rotate spinach and beets together. Remove plants with yellow angular patches or white growth beneath leaves; control weeds and aphids that maintain viruses.

Monitor spinach for aphids, slugs, leafminers, flea beetles, and chewing caterpillars. Protect young plants with barriers and use targeted controls that leave edible foliage free of unnecessary residues.