How to grow Dwarf Siberian kale: a compact plant with frilly blue-green leaves in the garden

How to Grow Dwarf Siberian Kale From Seed

By Maxim Kaufman — Founder & CEO, Organo Republic

Updated July 2026

Dwarf Siberian is a compact, incredibly cold-hardy kale prized for its frilly blue-green leaves and vigorous, productive growth. It stays low and bushy, making it ideal for small beds, containers, and cut-and-come-again harvesting, and it shrugs off hard frost better than almost any other kale. Baby leaves are ready in about 25 days and full leaves in 50 to 60 days, and the flavor only sweetens as the weather cools. This guide covers how to grow Dwarf Siberian kale from seed, from sowing to a long overwintering harvest.

Ready to grow your own? Shop Kale Dwarf Siberian Seeds from Organo Republic.

This is the quick guide to Dwarf Siberian. For the full step-by-step on starting seeds, sowing, feeding, and troubleshooting kale, see our complete guide to growing kale from seed.

Quick start

Direct-sow Dwarf Siberian kale a quarter to half inch deep in rich soil, full sun to part shade, once the soil is workable in spring or again in mid to late summer for a fall and winter crop. Keep it evenly moist, thin to 12 to 18 inches apart, and start picking baby leaves in about 25 days. Harvest the outer leaves cut-and-come-again and let frost sweeten it.

Best tip

Lean on Dwarf Siberian's cold-hardiness: sow a patch in late summer, mulch it, and let it overwinter. The frilly leaves you pick after the first frosts are noticeably sweeter, and in most climates this compact plant keeps cropping long after the rest of the garden is done. In the hottest regions, grow it mainly as a fall through spring crop to avoid summer bitterness.

At a glance

Botanical nameBrassica oleracea var. sabellica 'Dwarf Siberian'

Plant typeHardy cool-season biennial grown as an annual

USDA zones2 to 11 (extremely cold hardy)

SunFull sun to part shade

Days to maturity25 days baby, 50 to 60 days full leaf

Height12 to 16 inches (dwarf, compact)

SpacingThin to 12 to 18 inches apart

Water1 to 1.5 inches a week; keep evenly moist

Uses

Dwarf Siberian's tender, mild leaves are gentle enough to eat raw. Massage them with a little oil and lemon for salad, blend them into smoothies, bake them into crisp kale chips, or add them to soups, stir-fries, and pasta. Strip the central rib on larger leaves before cooking, and use frost-sweetened winter leaves for the best flavor.

Frequently asked questions

How cold-hardy is Dwarf Siberian kale?

Very. Dwarf Siberian is one of the hardiest kales you can grow and shrugs off hard frost, often keeping its frilly blue-green leaves productive into winter down to around 10 to 20F, especially with a little mulch. The cold actually sweetens the leaves.

How long does Dwarf Siberian kale take to grow?

You can start snipping baby leaves in about 25 days, and plants reach full-sized leaves in roughly 50 to 60 days. Because you harvest the outer leaves and the plant keeps growing from the center, one sowing can crop for months.

Is Dwarf Siberian kale good for containers and small gardens?

Yes. It stays compact and bushy, usually around 12 to 16 inches tall, which makes it one of the best kales for pots, raised beds, and tight spaces. Use a container at least 8 to 12 inches deep with one or two plants and pick the outer leaves as you need them.

What does Dwarf Siberian kale taste like?

It has tender, mild, slightly sweet leaves that are gentle enough to eat raw in salads or smoothies, and it only gets sweeter after frost. The frilly leaves also hold up well massaged, baked into chips, or added to soups and stir-fries.

Ready to grow your own? Start with a packet of heirloom Dwarf Siberian kale, a compact, extremely cold-hardy green that keeps producing frilly, sweet leaves right through frost.

Sale

Siberian Kale Seeds – Dwarf, Non-GMO HeirloomHeirloom, non-GMOHeirloom Dwarf Siberian kale — compact, extremely cold-hardy, and productive for months.

Price$5.99 Sale Price$4.99

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Want more than kale? These value sets all include kale seeds, plus many more greens and veggies:

By Maxim Kaufman — Founder & CEO, Organo Republic

Maxim founded Organo Republic in 2017 and personally selects, tests, and grows the heirloom, non-GMO varieties the company offers. Under his leadership, Organo Republic was named Agri Business Review’s Top Non-GMO Seed Variety Solution 2026.