Spinach earned its reputation the honest way — a green that's outsized on iron, vitamin A, and vitamin K, ready to harvest in as little as forty days, and tolerant enough of cold that a mulched bed can survive a hard freeze and keep producing. KVITER stocks four varieties that cover a wider range than the name "spinach" usually implies: two true spinaches bred for cool-weather reliability, and two heat-loving stand-ins that step in exactly when true spinach quits. Every packet ships heirloom or open-pollinated, tested for strong germination before it ever reaches a customer's door.
Exploring Spinach Varieties
- Bloomsdale Long Standing — a savoy-type heirloom, deeply crinkled dark green leaves, prized for holding in the ground longer than most before bolting. Matures in roughly 40–48 days. The default pick for gardeners who want one dependable variety and nothing fussy.
- Viroflay — a French heirloom with large, smooth to semi-savoy leaves, often triple the size of Bloomsdale's by maturity. Grows fast, around 45 days, and its size makes it a favorite for cooking rather than baby-leaf salads.
- Malabar Spinach (Basella alba) — not a true spinach at all, botanically speaking, but a tropical climbing vine that fills spinach's role once summer heat sets in and Spinacia oleracea bolts. Glossy, thick leaves, a mild peppery note, and it'll climb a trellis six feet or more given the season.
- Kangkong (Ipomoea aquatica) — water spinach, a fast-growing Southeast Asian green from the morning glory family. Thrives in wet, warm soil, gets stir-fried more often than eaten raw, and produces continuously if the outer stems get cut rather than the whole plant pulled.
Why Grow Spinach
Spinach isn't just a filler green — it's dense with iron, loaded with vitamin K, and carries more vitamin A per leaf than most vegetables. It also grows fast enough to fit into a garden's dead zones, the gap between a spring crop coming out and a summer one going in. A patch sown in March can be finished and cleared before tomatoes even go in the ground.
KVITER's heirloom and open-pollinated seed keeps that reputation intact: no hybrid shortcuts, just varieties that have earned their place in gardens for generations, with germination tested so a packet performs the way it's supposed to.
Spinach Seeds for Planting — Zone & Season Timing
True spinach and heat-tolerant substitutes like Malabar and Kangkong don't share a calendar — they're nearly opposites, so plan accordingly.
In Zone 3–4, sow spinach in spring from late April through May, then again in fall starting early August. The season here is short, so it's best to prioritize Bloomsdale for its reliable bolt resistance.
In Zone 5–6, spring sowing begins in early April, with a fall sowing window opening in mid-August. Both true spinach varieties perform well in this zone, though Malabar and Kangkong will need a warm head start indoors.
In Zone 7, plant in spring during March, and again in fall from late August through September. The fall crop often outperforms the spring one here, since heat tends to arrive early.
In Zone 8, spring sowing starts in late February, with fall sowing running from September through October. True spinach tends to struggle once May heat sets in, so switch over to Malabar or Kangkong for summer greens.
In Zone 9, spring sowing falls in January and February, with fall sowing in October. Spinach is essentially a fall/winter crop here, while Malabar and Kangkong cover the summer entirely.
In Zone 10, spring sowing happens in January, with an extended fall window from October through November. This follows the same pattern as Zone 9, but with an even longer stretch for the heat-loving varieties.
FAQ
How long does it take for spinach seeds to germinate?
Seven to fourteen days for true spinach varieties like Bloomsdale or Viroflay, faster in cool soil around 50–68°F. Spinach actually germinates poorly once soil temps climb past 75°F. Kangkong and Malabar are the opposite: they want warmth, and can take up to three weeks in cool soil.
Can you direct sow spinach seeds?
Yes, and it's the preferred method. Spinach roots dislike disturbance, so starting indoors and transplanting tends to set plants back. Direct sow as soon as the soil can be worked in spring, roughly a half-inch deep.
Why does spinach bolt, and how do you prevent it?
Bolting is the plant's response to heat and long daylight — it rushes to flower and set seed, and the leaves turn bitter once it starts. Bolt-resistant varieties like Bloomsdale buy extra time, but the real fix is timing: get spinach in the ground early enough to mature before the heat arrives, or switch to Malabar or Kangkong once temperatures climb.
Can you save seeds from spinach plants?
Yes, with heirloom or open-pollinated varieties like Bloomsdale and Viroflay. Spinach is wind-pollinated and dioecious, meaning separate male and female plants, so isolation from other spinach varieties matters if true-to-type seed is the goal.
