🌿 Marjoram 'Sweet'

Sowing window (UK)	March to May
Minimum soil temperature	10°C at seed depth
Spacing	23 cm apart
Days to germination	14 days
Days to harvest	75 days
Sowing method	Direct sow outdoors
Frost hardy	No
Sun	full-sun
Watering	low
Plant family	Lamiaceae

When should I sow Marjoram 'Sweet' in the UK?

In the UK, sow Marjoram 'Sweet' from March to May. It is normally sown direct outdoors. Wait until the soil has reached 10°C at seed depth rather than going by the calendar - marjoram will sit and rot in cold ground.

What soil temperature does Marjoram 'Sweet' need to germinate?

Marjoram 'Sweet' needs a minimum soil temperature of 10°C at seed depth to germinate reliably. Below that, germination is slow and patchy, and seed is more likely to rot than sprout. Measure at around 5cm down, in the morning, rather than trusting air temperature.

How deep and how far apart should I sow Marjoram 'Sweet'?

For Marjoram 'Sweet', space plants 23cm apart.

How long does Marjoram 'Sweet' take to grow?

Marjoram 'Sweet' takes roughly 75 days from sowing to harvest. Seed usually germinates in about 14 days.

Is Marjoram 'Sweet' frost hardy?

No. Marjoram 'Sweet' is not frost hardy. Do not put it outside until the risk of frost has passed in your area, and be ready to fleece it if a late frost is forecast.

Sowing data cross-checked against RHS growing guides and UK seed-merchant catalogues. Soil temperatures are the minimum for reliable germination, measured at seed depth.