Fresh blueberries that are picked at just the right time are absolutely bursting with juicy flavor. They're unlike any berries you can buy at the grocery store! And not only are ripe blueberries completely delicious, but they're also packed full of antioxidants and other essential nutrients. Figuring out how to know when to pick blueberries will help you harvest the ripest, juiciest berries for eating, baking, or storing.
There are two major factors that generally determine when blueberries will become ripe: what climate you live in, and which blueberry varieties you're harvesting.
Blueberries in each hardiness zone across North America will reach peak ripeness at different times. And in addition to the climate, different varieties of blueberries also mature at different rates.
Whether you're harvesting wild blueberries, visiting a u-pick farm, or enjoying flavorful berries from your own home blueberry patch, the best way to know when your berries have reached peak ripeness is to know what to look for.
In this guide, we'll go over blueberry seasons across the United States, as well as how to read the signs to tell when your berries have reached the perfect maturity for summer picking.
When Is Blueberry Season?
In North America, the blueberry season runs from around May through late September. In the hottest zones (such as USDA hardiness zones 9-10), some blueberries can even be harvested starting as early as March. However, late July and August are popular harvesting months for blueberry bushes in many zones across the United States.
Here's a guide to when you can expect peak harvest season depending on your location:
- Zones 3-4: In the colder, northern climates, blueberries are typically ready to harvest in the mid to late summer, from July through late August.
- Zones 5-6: Blueberries grown in the middle zones of the U.S. generally reach peak harvest time in June and July.
- Zones 7-8: In these Southern states, you'll find ripe blueberries starting in the earlier summer, usually beginning in June and sometimes stretching through August.
- Zones 9-10: In these hot, summer climates, blueberry production can start as early as March, with bushes still producing fresh fruit sometimes as long as late May or even June.
How Do You Know When to Pick Blueberries?
Knowing when blueberries generally ripen in your USDA hardiness zone is a helpful guide for knowing when to pick. But the best way to know when to go blueberry picking is to examine the berries for ripeness by checking their color, firmness, size, and how easily they release from the plant.
Unripe berries will start out green and progress through light pink, red, and light blue stages before turning a dark blue color. This deep blue hue is often the best indicator of ripeness. (However, it's not foolproof, since a few varieties don't reach that deep bluish purple color.)
If your berries are light pink or green, firm, or small, they're probably not ready to pick yet.
It can be hard to wait for that first berry to reach its full ripeness, but your patience will be rewarded with juicy, delicious fruit full of fresh summer flavor!
Signs That Blueberries Are Ready to Pick
It's not too difficult to determine whether blueberries are ready to pick. Here are some good ways to know whether your blueberries are at peak ripeness and ready to harvest.
- Deep blue color. Ripe blueberries are generally a deep blue color with a slight, white-colored coating around the surface of the berries. (This white color is called the bloom and provides natural protection for the berries. It's a good sign that the berries are fresh!)
- Firm, but not hard. Blueberries should be firm - not too hard (which is a sign that they're underripe) and not too squishy (which usually means they're overripe).
- Easy to pick. You should be able to detach a ripe blueberry from its stem easily by gently rolling it between your fingers. If the berry clings to the plant or requires more than a gentle tug, it's probably not quite ripe.
- Plump. Different varieties of blueberries will reach different sizes, so the size of the berries isn't always an ideal indicator of ripeness. Still, you can examine your blueberry bush for the largest, plumpest, full size berries. If they detach from the plant easily, have a deep blue color, and are firm, but not hard, they're probably ready! In general, wild blueberry fruits will be smaller than cultivated berries.
Do Blueberries Ripen After Picking?
If you pick your berries when they're still green or white, they will not ripen any more once they've been detached from the plant. However, berries that are already blue or red will ripen some if they're kept at room temperature.
Tips for Picking Blueberries
Picking fresh blueberries is an unbeatable summer experience - whether you visit your local u-pick blueberry farm or have your own blueberry plants in your home garden.
Here are some tips for getting the best results from your blueberry harvest.
1. You Don't Have to Pick Them All At Once
Even on the same bush, blueberries will ripen at slightly different rates. The best way to enjoy the most delicious berries is to harvest every couple of days, picking only the largest, ripest, deep blue fruits each time.
2. Harvest in the Morning for the Best Flavor
The best time of day for harvesting is in the morning. Early morning is best, when there's still some dew on the plant and the day is cool. Once the sun comes out and it gets hotter, the berries will lose a bit of their sweetness.
3. "Tickle", Don't Squish
You can harvest the ripest berries quickly by "tickling" a cluster of berries to gently pull off the ones that are ready. To do this, just cup your hand around a cluster and softly "tickle" it with your fingers. The ones that are ready will simply fall off into the palm of your hand, while the unripe berries will cling to the bush.
4. Use a Shallow Container to Collect Your Berries
Choosing a shallow container for picking is a great way to prevent the soft fruits from being squished under the weight of a large harvest. An open container like a cake pan, shallow basket, or shallow tupperware dish (just a few inches deep) can be ideal for spreading out your berries as you pick.
5. Keep Your Container Close!
You might be surprised by how quickly you can fill your hands up with berries that are ready for picking! To make the job easier, keep your container directly under the bush you're working on so you can easily (and gently!) drop your berries in. Alternatively, you can tie your container to your waist for super quick access.
How to Store Blueberries
Fresh blueberries can be stored at room temperature for about two days and in the refrigerator for up to two weeks.
For long term storage, you can also freeze your berries for up to a year. There are all sorts of tasty ways to enjoy your frozen berries, such as in blueberry muffins, pancakes, oatmeal, pies, smoothies, and more. Check out my recipe for Blueberry Scones!
Tips for Washing Blueberries
If you want to wash your berries before storing them in the fridge, it's important to make sure that you dry them completely before putting them away. Moist berries can quickly mold.
To wash and dry your berries, start by rinsing them in a colander under cold water. If you have lots of berries, be sure to work in batches to avoid squishing them.
Once they're thoroughly washed, lay them in a single layer on some paper towels until they're completely dry. After that, you can store them in a container in the refrigerator for later use.
For extra cleaning power, you can also use white vinegar. To do this, fill a bowl with a 3-to-1 mixture of water and distilled white vinegar. Add your blueberries to the bowl and swirl them around for 30-60 seconds. Then, rinse them in cold water and dry thoroughly before storing.
Tips for Freezing Blueberries
Blueberries are a super easy fruit to freeze to use all winter long. They don't have to be processed, and can easily store in freezer bags.
For the full tutorial, check out my post here: How to Freeze Blueberries.
More Blueberry Growing Helps
Need more help growing blueberries at home? Check out my list of resources below to get you growing and eating your very own blueberries!
- How to Grow Blueberries in Containers: Not enough yard space to plant a blueberry bush? No worries! You can grow blueberry bushes in containers on a patio or balcony. Find out how!
- DIY Blueberry Covers: Protect your blueberry bushes from birds, deer, and neighbors (just kidding) with these easy to assemble covers.
- How to Prune Blueberry Bushes: It takes just a few minutes to prune back a blueberry bush each winter. This helps your bush to thrive and promotes airflow.
