When To Pick Garden Potatoes

You know when to pick garden potatoes by watching the plant’s lifecycle, and the general rule is to harvest once the foliage has flowered and then begun to die back.
 
The exact timing for when to pick garden potatoes depends on whether you want new potatoes for immediate eating or mature storage potatoes.
 
If you’ve been scratching your head wondering when to pick garden potatoes for the best flavor and longest shelf life, you’re in the right place.
 
In this post, we’ll dig into the signs that tell you when to pick garden potatoes, the difference between earlies and maincrops, and some handy tips for harvesting.
 
Let’s get our hands dirty and figure out the perfect moment for your spuds.
 

Understanding When to Pick Garden Potatoes Based on Type

The most reliable way to know when to pick garden potatoes is to know exactly which variety you planted, because earlies, second earlies, and maincrop potatoes all have different harvest windows.
 
First early potatoes are usually ready to harvest about 10 weeks after planting, and that’s when you can pick garden potatoes as delicious, tender new potatoes.
 
Second earlies take a couple of weeks longer, so you might pick garden potatoes from these around 13 weeks after planting.
 
Maincrop potatoes are the ones you grow for storage, and you should plan to pick garden potatoes from these about 20 weeks after planting, once the plants have fully matured.
 

1. First Earlies for Fresh New Potatoes

If you planted first earlies in late March or early April, you can start checking for when to pick garden potatoes as soon as you see flowers appear.
 
The flowering stage signals that tubers are forming beneath the soil, but for the smallest, most delicate new potatoes, you can harvest just a couple of weeks after flowering.
 
Many gardeners love to pick garden potatoes at this stage because the skins are paper-thin and the flavor is unmatched.
 
The trick is to harvest only what you need for a meal, because these new potatoes won’t store well.
 

2. Second Earlies for a Balance of Size and Freshness

Second earlies are a happy medium, and knowing when to pick garden potatoes from these means waiting until the flowers have fully opened and started to fade.
 
At this point, roughly 13 weeks after planting, the tubers will be larger than first earlies but still have that lovely, fresh taste.
 
You can pick garden potatoes from second earlies gradually, starting with the biggest ones and leaving smaller ones to keep growing.
 
This method, called “robbing,” lets you enjoy fresh spuds over several weeks.
 

3. Maincrop Potatoes for Storage

When to pick garden potatoes for winter storage is a different game, as maincrop varieties need the full growing season to develop thick skins.
 
You should wait until the foliage has completely died back, turning yellow and then brown, before you pick garden potatoes from the ground.
 
This die-back usually happens around 20 weeks after planting, often in late summer or early autumn.
 
If you pick garden potatoes too early, their skins will be thin and they’ll bruise easily, so patience is key for storage spuds.
 

Visual Signs That Tell You When to Pick Garden Potatoes

Beyond just counting weeks, your potato plants will give you clear visual clues about when to pick garden potatoes like a seasoned pro.
 
Watching the flowers is the first sign, but the condition of the foliage is the ultimate indicator of maturity.
 
Here are the specific things to look for in your garden.
 

1. Flowering Has Begun or Finished

For early varieties, the appearance of the first potato flowers is your green light to think about harvesting.
 
Once you see buds forming, you know the plant is channeling energy into tuber growth, and you can pick garden potatoes shortly after.
 
Some varieties flower sparsely or not at all, so don’t rely solely on flowers as your signal for when to pick garden potatoes.
 
If flowers are absent, use the calendar method based on your planting date instead.
 

2. Foliage Turning Yellow and Wilting

For maincrop potatoes, the foliage will naturally start to yellow, flop over, and die back when the tubers are mature.
 
This is the most reliable sign for when to pick garden potatoes that you plan to store.
 
Once about 70% of the foliage has died, you can cut the stems down to ground level and wait another two weeks.
 
This waiting period allows the skins to set and harden, which is essential if you want to pick garden potatoes that last through the winter.
 

3. Test Digging a Sample Plant

If you’re unsure about when to pick garden potatoes, the best way to check is to gently dig up one test plant.
 
Carefully loosen the soil with a fork, lift the plant, and inspect the tubers and their skins.
 
If the skins rub off easily with your thumb, they’re too immature for storage, so wait a bit longer to pick garden potatoes.
 
If the skins are firm and don’t scrape off, it’s the perfect time to pick garden potatoes from that row.
 

Best Practices for Harvesting and Curing After You Pick Garden Potatoes

Once you’ve figured out when to pick garden potatoes, how you handle them after harvest matters just as much for quality.
 
Gentle handling prevents bruising, and proper curing extends shelf life dramatically.
 
Let’s walk through the steps to get the most from your harvest.
 

1. Choose a Dry Day to Dig

Try to pick garden potatoes on a dry day when the soil is crumbly, not soggy.
 
Wet soil clings to tubers and makes them harder to spot, which increases the chance of accidentally spearing them with your fork.
 
Dig a few feet away from the plant’s stem and work inward to avoid cutting into the potatoes.
 
If the ground is too wet, wait a few days to pick garden potatoes so they come out cleaner.
 

2. Cure Your Potatoes Before Storage

After you pick garden potatoes for storage, don’t wash them right away, as washing removes the protective dirt layer.
 
Instead, leave them on the soil surface for a couple of hours to dry off any excess moisture.
 
Then move them to a dark, cool, and well-ventilated place for about two weeks to cure.
 
Curing toughens the skins and heals any minor cuts, which helps when you pick garden potatoes early and want them to last.
 

3. Store in a Cool, Dark Place

Once cured, store your potatoes in burlap sacks, paper bags, or cardboard boxes with good airflow.
 
The ideal storage spot is dark, around 45 to 50°F (7 to 10°C), and humid, like a basement or garage.
 
Never store potatoes in the refrigerator, as the cold turns their starches into sugars, making them taste sweet and turn dark when cooked.
 
And keep them away from onions, which release gases that cause potatoes to sprout faster.
 

So, When to Pick Garden Potatoes for the Best Results?

You know when to pick garden potatoes by matching the harvest to the variety, the plant’s condition, and your intended use.
 
For fresh new potatoes, you can pick garden potatoes as soon as the flowers appear.
 
For storage potatoes, you should pick garden potatoes only after the foliage has died back and the skins have set.
 
Whether you pick garden potatoes in early summer for a treat or in autumn for winter meals, timing is everything.
 
Now you’ve got the knowledge to pick garden potatoes at their absolute peak of flavor and quality.
 
Happy digging, and enjoy the fruits of your labor from your garden plot.