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Glassy Potatoes - How to Prevent?

I have harvested some potatoes from the garden. I have had a few problems with glassy potatoes: they are hard translucent and not very palatable – even after cooking. Here is an example of what some of them looked like.

I searched the internet on why you can get glassy potatoes: apparently they do this when they start to sprout and grow shoots/roots. I couldn’t really find anything else useful.

Is this true and if so do I just use all potatoes presenting signs of sprouting as seed potatoes?

Can I prevent glass potatoes or should I just harvest earlier?

Posted almost 2 years ago | Last edited almost 2 years ago
PaulP

PaulP

Folia Helper

United States5b

Do they taste more sugary than starchy? Temperature extremes will do that – extreme hot or extreme cold. Put a potato in the refrigerator and it will end up looking like this. In the garden a week of extreme temperature will do this.

Posted almost 2 years ago

Hmm – I was planning on waiting until the first frost to harvest my potatoes – should I start now?

Posted almost 2 years ago

I was wondering whether it was climatic induced or not. In SA we usually grow potatoes in summer (they go in the ground in August) – the one in the picture is from last summer’s tubers that I missed during the harvest. They came up during this winter and I thought I’d leave them and see whether we get a decent crop or not. It has been a hot winter so far in SA (above 15oC this year, usually well below 10oC). The summer crop potatoes also had some glassy ones – and we did have really bad heat waves.

Some of them were a bit sweet (but not glassy) and the glassy ones don’t have flavour at all.

I had some millipedes feeding on the potato tubers in summer – might the glassyness also be a response to herbivory?

Posted almost 2 years ago | Last edited almost 2 years ago
PaulP

PaulP

Folia Helper

United States5b

@ruthiebaby88 – I harvest mine when the tops start dying back. If you wait too long they won’t be as, um… high quality as they could be. Some may rot.

@The_Shroom – bugs causing this problem? Nope.

Posted almost 2 years ago

When do you usually see the tops dying back? Summer? Fall?

Posted almost 2 years ago

Thanx PaulP! I will be more vigilant with potato harvesting and keeping an eye on the weather :)

I tend to harvest my potatoes three-four weeks after the flowers have died.

Posted almost 2 years ago | Last edited almost 2 years ago
PaulP

PaulP

Folia Helper

United States5b

@The_Shroom – ah, you likes ‘em tender. “new potatoes” is what they’re called. LOL

@ruthiebaby88 – Depends.

The folia plant page for “potato” (sans variety) gives a good overview. It depends on what variety you’re growing. My desiree potatoes have a bit more to go, they take about 5-6 months from start to finish. Check the Plant Database for particulars on your favorite.

Posted almost 2 years ago

Oh! Goodness – I have to confess, I don’t really have a ‘variety/cultivar’. You can’t get seed potatoes to buy in SA (or at least not reasonable amounts – try 20kg of spuds! Way too many potatoes then). So mine are store bought ones that have made shoots (the stores just label them ‘potato’) – one of the reasons why my yield isn’t as great as it should be :)

Will definitely check out the overview page! Thanx.

Posted almost 2 years ago

Hi there! You're reading a conversation in the Kitchen Gardens group on Folia.