Most turnips take to grow from seed to harvest in about 30 to 60 days depending on the variety you plant. Fast types like Hakurei can be on your plate in as few as 38 days from the moment you drop the seed in the ground. Larger storage types need closer to 60 days before the roots reach their full size. That range makes turnips one of the fastest food crops you can grow in your garden from start to finish.
I planted three different varieties on the same day last fall to see how turnip days to maturity play out in real life. Hakurei was ready to pull at day 38 just like the seed packet promised. Purple Top White Globe took a full 52 days before the roots hit a good size. Shogoin greens were ready to cut at day 30, but the roots on that one didn't fill out until around day 70. The variety you pick has a huge impact on how long you wait for your food.
Several factors beyond variety choice affect your turnip growing time in the garden. Soil temperature matters most at planting since seeds sprout fastest when ground temps sit between 60-85°F per UMN Extension data. Cold soil slows down the sprouting phase and adds days to your total growing time. Steady moisture and 6-8 hours of sun per day keep growth moving at a good pace from sprout to harvest.
Always check the maturity date on your seed packet before you buy it at the store. That number tells you the average days from planting to harvest under good growing conditions. If you want turnips fast, grab Hakurei or Tokyo Cross and you'll be eating in just over a month from seed drop. If you don't mind waiting a bit longer, Purple Top White Globe gives you bigger roots that store well through winter in a cool spot.
Cold weather and dry spells are the two biggest things that slow your turnip growing time beyond what the packet says. A cold snap right after planting can add 7-14 extra days to the total since seeds just sit still until the soil warms back up. Missing a full week of water stresses the roots and pauses their growth until moisture returns. Keep your soil warm, wet, and well-lit. Your turnips will hit their target dates right on time when growing conditions stay steady.
For a steady supply of fresh turnips, try sowing a new row every 10 days during your planting window. UIUC Extension backs this method for keeping the harvest going for weeks. Your first batch comes up while the later ones still grow in the ground. This way you always have tender young roots ready to pull. No more dealing with a giant pile that all matures the same week.
Pick your variety based on how patient you are and what you plan to do with the harvest. Fast types are great for fresh eating within weeks of planting day. Slower types give you roots that hold up in the fridge or root cellar for months after harvest. Either way, turnips are one of the fastest root crops you can grow at home. They deliver food from your garden long before most other veggies are close to done. I tested this myself and had turnips on the table while my tomatoes were still tiny green balls on the vine.
Read the full article: Growing Turnips: A Step-by-Step Plan
