How hot are Jalapeño chillies?

They rate 2,500–8,000 on the Scoville scale, offering a mild to medium heat.

Can I grow Jalapeños in the UK?

Yes, they grow well in pots or garden beds with sufficient warmth and light.

When can I harvest Jalapeños?

Pick green for a crisp flavour or wait until red for a sweeter taste. Harvest: 70–85 days; pick green for mild heat or red for stronger flavour. The harvest window runs May to October. Watering: regular watering, keep soil moist but not waterlogged.

Do these seeds make a good gift?

Yes — this is a straightforward packet to give, and what makes it work as a gift is mostly timing. Sowing runs January to April, so a packet given inside that window can go straight in, and one given outside it keeps perfectly well until the season comes round. There are approximately 5 seeds in the packet. On effort it looks after itself, which matters if you are giving it to someone new to growing. It suits pots, greenhouse and sunny garden beds, so it works for a small space as well as a garden.

Jalapeño chilli seed packet – front with illustrated chilli peppers on a clean background

Jalapeño chilli plant with glossy red fruits growing on compact stems in a sunny position

Jalapeño chilli flowers on the plant, showing thick-walled green peppers ready for harvest

Jalapeño chilli seed packet – back with sowing instructions and growing guidance

Jalapeño chilli seed packet – side view showing folded paper packet and seed insert

Jalapeño chilli plant with glossy green fruits growing on compact stems in a sunny position

Chilli 'Jalapeño' Seeds

Name: Chilli 'Jalapeño' Seeds
SKU: HS011
Price: 4.00 GBP
Availability: InStock

Capsicum annuum 'Jalapeño'

A firm spicy favourite that packs a punch. A household staple in the chilli department, fantastic to grow and whilst the green peppers taste almost like a veggie, the red has a sweeter flavour and is often smoked or pickled.

Approx 5 seeds

Compact for Pots
Grows Inside
Grow Your Own
Medium Spice

Jalapeño seeds UK are ideal for growing mild chillies at home. Sow indoors from January to April, transplant after frost risk. They prefer full sun and well-drained soil. Water regularly to keep soil moist. Harvest mature green chillies about 70–85 days after sowing for fresh use or pick when red for hotter flavour.

Sow:Jan–Apr
Germination:7–14 days at 20–25°C
Grow:Full sun, well-drained soil, space 30cm apart
Water:Regular watering, keep soil moist but not waterlogged
Harvest:70–85 days; pick green for mild heat or red for stronger flavour
Best for:Pots, greenhouse, sunny garden beds

Grow in Your Garden

Grow Your Own Chilli Jalapeño – Mild, Versatile & Easy

Reviews

No reviews yet for Chilli 'Jalapeño' Seeds. If you have grown it, yours would be the first.

Elsewhere in the range

Recent reviews of other Herboo seeds. These are not ratings of Chilli 'Jalapeño' Seeds.

Foxglove 'Apricot' Seed Packet by Herboo

Reviewing

Foxglove 'Apricot' Seeds

20 Aug 2026

Good card gifts

Bought a couple of these as card gifts for friends and they loved them

Flavia

Herboo Verbena bonariensis seed packet showing tall airy purple flower illustration.

Reviewing

Verbena Bonariensis Seeds

12 Mar 2026

Good tips

Liked how you gave tips on how best to sow. nicely done

Joel C.

Cosmos bipinnatus ‘Apricotta’ seeds packet – apricot cosmos cut flower seeds

Reviewing

Cosmos 'Apricotta' Seeds

7 Mar 2026

Beautiful colour

really liked the colour, and pretty packaging.

Iona. P

Chilli 'Jalapeño' Seeds