Germination & Growth of Artichoke Seeds

Globe artichokes are not the fastest seeds to germinate, but with the right conditions you can achieve strong, reliable plants. Understanding the correct method, timing, and seed longevity will help you get the best results.

How to Germinate Artichoke Seeds

1. Start seeds indoors in late winter to spring, ideally between February and April.
2. Use small pots or modules filled with a free-draining seed compost.
3. Place one seed per cell or pot and cover with 1 cm of fine compost or vermiculite.
4. Water lightly and place in a warm location — an ideal temperature is 18–21 °C.
5. Provide consistent moisture but avoid waterlogging.
6. Use a heated propagator or a sunny windowsill for reliable warmth.
7. Germination usually takes between 10–21 days.

How Long Does It Take Artichoke Seeds to Germinate?

At optimum temperatures (18–21 °C), seeds usually germinate in 10 to 14 days. In cooler conditions (12–15 °C), germination may take up to 3 weeks. Very cold soil (below 10 °C) will cause slow, patchy, or failed germination.

How Long for Artichoke Seeds to Germinate Outdoors?

If sown outdoors, artichoke seeds may take 3–4 weeks to appear, depending on soil warmth. This is why UK gardeners typically start them under cover first.

How Long Do Artichoke Seeds Take to Grow On?

After germination, seedlings need around 6–8 weeks indoors to develop strong roots and several sets of true leaves. Once hardened off and planted outside, artichokes grow steadily through summer and can produce their first edible buds in the second year.

How Long Do Artichoke Seeds Last?

Stored in a cool, dry, airtight container, artichoke seeds remain viable for 4 to 6 years. Germination rates decline gradually after year three, so fresher seed gives the best results.