Sow now › Portsmouth (PO) › August
What to sow in August
in Portsmouth (PO)
13 crops can go in this month. Typical last frost PO: about 1 May. First autumn frost about 30 October. This is the August page; jump to this month.
Sow in August
Plant out in August
Sown earlier under cover, hardened off, and going in the ground once the last frost has passed.
Ready to pick in August
Coming up in September
Blueberry. See the September page.
Your postcode
Type the first half of your postcode (NE12, SW1A) and you'll get the page for your area. Or a US ZIP and you'll get your zone.
Questions people ask
What can I sow in August in Portsmouth (PO)?
13 crops go in this month in Portsmouth (PO): Cabbage (Spring), Coriander, Lettuce, Lettuce (Butterhead), Mizuna, Mustard Greens, Onion (Salad/Spring), Pak Choi and more.
When is the last frost in Portsmouth (PO)?
Typically around 1 May, with the first autumn frost about 30 October. Treat those as averages and watch the forecast; a cold spring can push them back a fortnight.
What's ready to harvest in August in Portsmouth (PO)?
Apple, Aubergine, Basil, Beetroot, Blackberry, Blackcurrant, Blueberry, Broad Beans and more.
Plan the plot, track every sowing, cook the harvest
Sowing reminders and harvest forecasts for your own frost dates, the Seed Tin, Scan Centre for any label or packet, and the Potty Mouth Garden Club. Free to start.
Allotment keeper in the North East of England, the voice behind the Tony C Smith YouTube channel, and the gardener who built GrowMore CookMore. Club numbers on this page update as members log their plots. Last updated 4 September 2026.