How To Tell When Blue Hubbard Squash Is Ripe

You can tell when blue hubbard squash is ripe by its skin color and the condition of its stem.
 
Blue hubbard squash is ripe when the skin turns a deep, muted blue-grey and feels rock hard.
 
The stem also gives it away because a ripe blue hubbard squash has a dry, corky stem that’s starting to shrivel.
 
If you’ve been wondering how to tell when blue hubbard squash is ripe, you’re in the right place.
 
In this post, we’ll walk through the exact signs that tell you a blue hubbard squash is ready to harvest.
 
We’ll also cover what happens if you pick it too early and how to store it once it’s ripe.
 
Let’s dive in.
 

How to Tell When Blue Hubbard Squash Is Ripe

Learning how to tell when blue hubbard squash is ripe comes down to a few reliable signals.
 
Once you know these signs, you’ll never have to guess again.
 
Here’s what to look for.
 

1. The Skin Color Turns Deep Blue-Grey

A ripe blue hubbard squash has a skin that’s a deep, muted blue-grey color.
 
When it’s still immature, the skin looks lighter and more greenish.
 
As the squash matures on the vine, that green fades into the classic blue-grey that gives this variety its name.
 
So if your blue hubbard squash still looks pale or greenish, it’s not ready yet.
 

2. The Skin Is Hard and Won’t Dent

Press your fingernail into the skin of the blue hubbard squash.
 
If it leaves a dent or scratches easily, the squash isn’t ripe.
 
A ripe blue hubbard squash has skin so hard that your fingernail won’t make a mark.
 
That tough rind is one of the best ways to tell when blue hubbard squash is ripe.
 

3. The Stem Is Dry and Corky

Check the stem attached to the blue hubbard squash.
 
On a ripe squash, the stem turns dry, brown, and corky.
 
It may even start to shrivel a little.
 
If the stem is still green and flexible, your blue hubbard squash needs more time on the vine.
 

4. The Squash Feels Heavy for Its Size

Pick up the blue hubbard squash and feel its weight.
 
A ripe blue hubbard squash feels heavy because it’s full of dense, moist flesh.
 
If it feels light or hollow, that’s a sign it was picked too early or has started to dry out inside.
 

5. The Vine Starts to Die Back

As blue hubbard squash ripens, the vine it grows on begins to wither.
 
The leaves turn yellow and brown, and the tendrils dry up.
 
When the vine is dying back and the squash has already changed color, it’s a strong signal that your blue hubbard squash is ripe.
 

What Happens If You Pick Blue Hubbard Squash Too Early

If you pick a blue hubbard squash before it’s ripe, the flavor and texture will suffer.
 
An underripe blue hubbard squash has pale, stringy flesh that lacks sweetness.
 
It also won’t store as well because the skin hasn’t hardened enough to protect the flesh.
 
That’s why it pays to wait until you’re sure the blue hubbard squash is fully ripe.
 

1. Flavor Won’t Develop Fully

Blue hubbard squash develops its sweet, nutty flavor in the final stages of ripening.
 
Pick it too early and you’ll end up with a bland, watery squash.
 

2. Storage Life Shortens

A ripe blue hubbard squash can store for months in a cool, dry place.
 
An unripe one may rot within weeks because the rind isn’t tough enough yet.
 

3. Texture Stays Tough

Underripe blue hubbard squash tends to be fibrous and tough even after cooking.
 
Waiting until it’s ripe gives you the smooth, dense flesh this variety is known for.
 

How to Harvest and Store Ripe Blue Hubbard Squash

Once you’ve confirmed your blue hubbard squash is ripe, it’s time to harvest it carefully.
 
Use a sharp knife or pruning shears to cut the stem, leaving a few inches attached.
 
Don’t carry the squash by the stem because it can break off and create an entry point for rot.
 

1. Cure the Squash Before Storing

After harvesting, let the blue hubbard squash cure in a warm, dry spot for about ten days.
 
Curing hardens the skin further and helps the squash last longer in storage.
 

2. Store in a Cool, Dry Place

Keep your ripe blue hubbard squash in a cool, dry area with good air circulation.
 
Temperatures between 50 and 55°F are ideal for long-term storage.
 

3. Check Periodically for Soft Spots

Inspect stored blue hubbard squash every few weeks.
 
If you notice soft spots or mold, remove that squash so it doesn’t affect the others.
 
A properly cured and stored blue hubbard squash can last for six months or more.
 

So, How Do You Tell When Blue Hubbard Squash Is Ripe?

You can tell when blue hubbard squash is ripe by its deep blue-grey color and rock-hard skin.
 
A dry, corky stem and a heavy feel are also clear signs that your blue hubbard squash is ready.
 
Wait until the vine starts dying back, and you’ll know for sure.
 
Once harvested and cured, a ripe blue hubbard squash will reward you with sweet, dense flesh that stores for months.
 
Now you know exactly how to tell when blue hubbard squash is ripe, so you can harvest at the perfect moment.