Why Are My Pea Seeds Not Sprouting?

Pea seeds sown in the ground that simply do not emerge — after what feels like an appropriate waiting period — have encountered one of several obstacles: the soil temperature is too cold for germination, the seeds have been eaten by mice or birds before emerging, they have rotted in cold wet soil, or they were not viable seed. Understanding which obstacle applies determines whether to wait, resow, or take a different approach for the next attempt.

Cold soil — the most common cause

Peas can germinate at soil temperatures as low as 5°C but do so very slowly (three to four weeks or more). At 10°C, they germinate in ten to fourteen days; at 15°C, within a week. Early spring sowings in cold soil may simply need more time than expected. Check the soil temperature with a thermometer pushed 5–7 cm into the soil — if it reads below 8°C, germination will be very slow. Do not resow over a struggling first sowing; wait and see what emerges. Mark the sown rows clearly so you know where the seeds are.

Seeds eaten by mice

Mice are the most reliable cause of complete pea sowing failure — not a single seed emerges because they were all removed within the first day or two. The give-away is the absence of any seeds at all when you dig in the row to check — they have been taken, not merely failed to germinate. Mouse damage is most severe in cold, late-spring conditions when little other food is available and the mice have found the seed cache. Prevention: sow pre-chitted seeds that germinate faster, stretch a fine mouse mesh over the row, or use mouse traps set around the sowing area.

Rotted seeds

In waterlogged or very cold, wet conditions, pea seeds can rot before they germinate. A seed that has rotted is soft and usually discoloured (dark brown or black). Dig up a few seeds from a failed sowing — if they are soft and rotted, the soil was too cold and wet. Improve drainage before resowing or wait for warmer, drier conditions. Seed peas sown in compost in pots or gutters indoors, then transplanted after germination, avoids this problem entirely.