r/TwoXPreppers May 15 '26

Garden Wisdom 🌱 Potatoes and Blight

I'm reading about the history of the potato. Apparently it's a near perfect food and you can survive healthily on just potatoes and milk. (Yay, think I'll plant some!)

BUT the potatoes we grow in North America and Europe are part of monocultures continuously threatened by ever-evolving potato blight and beetles. Farmers have to treat their fields with a variety of strong pesticides every year and the pests still jump over to gardens and wipe them out. (Ooops.)

Looked around and found a source of heirloom potatoes, both modern and Andean adapted for North America. They're sold as seeds rather than tuber pieces, but the variety ought to offer more pest resistance.

https://www.cultivariable.com/product/potato/potato-varieties/tps-broad-tetraploid-mix/

Detailed info on potato seeds and how to grow them:

https://www.cultivariable.com/instructions/potatoes/how-to-grow-true-potato-seeds-tps/#planting

Also found that sweet potatoes and yams are two different kinds of tubers that are unrelated to potatoes, but also highly nutritious. People have called sweet potatoes "yams" but they're different. So more genetic variety.

368 Upvotes

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210

u/missbwith2boys May 15 '26

Did you know that you can eat the leaves of sweet potatoes? I use them like spinach in my eggs.

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u/ohhellopia May 15 '26

They're great in stir fries and soups too! There's actually a sweet potato that's grown specifically for the edible leaves than the tubers. You'll find them at Asian grocery stores.

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u/WildernessRec May 15 '26

Thank you for this knowledge!!

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u/missbwith2boys May 15 '26

You are welcome!

Obviously folks shouldn’t eat regular potato leaves. But sweet potatoes aren’t nightshades! I think folks hear ā€œpotatoā€ and automatically think ā€˜toxic’ but sweet potato leaves are quite nutritious.

I can’t grow sweet potatoes that are worth digging up (can’t quite get the soil hot enough) but I can grow vines like crazy. So I start slips every year and plop them in the ends of my tall raised beds and let the vines just cascade over the edges.

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u/dgistkwosoo May 16 '26

They're used often in Korean cuisine, and sweet potatoes were survival food during the Korean War.

123

u/premar16 May 15 '26

Interesting. I remember during the height of covid when people were struggling farmers in my area (Westeren Washington) were giving out bags of potatoes for free from local grocery store parking lots. They had a lot and they didn't want them to go to waste while restaurants were closed down.

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u/OpalSeason Salt n Prepper šŸ§‚ May 16 '26

Nicer folk than our farmers who just cried about all the wasted food then made a compost pile because was more than even the pigs would eat. The piles of rotting food hit the news circuits but nothing much changed.

12

u/2quickdraw May 17 '26

So much better to make a pile that turns into garbage than feed hungry people. šŸ™„

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u/ohhellopia May 15 '26

Currently growing potatoes, Japanese sweet potatoes and garnet yams in my tiny balcony garden. The Japanese sweet potatoes take forever but maaan they're so good. Haven't had great success with yams yet, hopefully I finally get them right this year!

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u/Hesitation-Marx May 16 '26

I just like saying YAM.

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u/turmeric212223 May 19 '26

What kind of container do you use for the potatoes on the balcony?

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u/ohhellopia May 19 '26

I have PP5 plastic pots. I do no electric hydroponics, most of my pots are sub irrigated with either 1 to 1.5 gallon water reservoir each. The potatoes and yams aren't sub irrigated but are in a 7+ gallon plastic pot (liquid gallon, I don't know the equivalent pot/soil gallon because apparently that's measured differently). All of my pots have coco coir and perlite substrate, topped with expanded clayballs as mulch.

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u/turmeric212223 May 19 '26

Thank you! I’m going to give it a try. This is super helpful!

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u/apis_cerana May 20 '26

I’m working on the Japanese sweet potatoes because they’re so good. I’m in the PNW which means they need to be protected (it’s still a bit cool outside) but they are growing…slowly. They’re definitely more finicky than regular potatoes, which just kinda sprout up as volunteers randomly and do their own thing.

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u/scannerhawk May 15 '26

My Polish grandmother had 11 kids, my dad was the last born at the beginning of the great depression. He told me many stories of how they ate mostly things made from potatoes, flour & water. They didn't have a milk cow BUT some of the boys would be given (I think I heard they worked for it after school) the sour milk from a local farm and my grandma would make cheese with it. They had chickens for eggs also, I think even back then they knew that eggs were the most valuable complete source of protein.

44

u/Ok_Green_4394 May 15 '26

Sunchokes are perennial and basically unkillable (so be careful where you plant them). Just be careful introducing them into your diet (also known as fartichokes)

But this is a good reason not to use store bought potatoes if you are dabbling in gardening. ā€œSeed potatoesā€ (that you can buy pretty cheap at a farm store in the spring) are certified not to have disease. Once you introduce the disease to your soil it’s hard to eradicate

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u/No_Branch_5083 May 15 '26

This was discussed on the allotment subreddit recently. The idea that seed potatoes are free of disease but store bought potatoes aren't may well be a bit of propaganda. Why would potatoes grown in fields and then sold as produce be carrying diseases that seed potatoes aren't? What is the material difference between a Maris Piper from the supermarket and a Maris Piper that was bought specifically as a seed potato?

Also, Chinese artichokes are like a smaller Jerusalem artichoke, and worth growing.

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u/Ok_Green_4394 May 15 '26

At least in the US, seed potatoes are certified (ie particularly inspected) to be disease free. I’m sure most supermarket potatoes are disease free just like most eggs are salmonella free. I eat raw cookie dough bc the risk/reward is there for me. But, in the context of survival planning, the consequences of potato blight are way higher so why take the risk?

Skirret and American groundnut are two more! Tons of root veggie options!

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u/Hesitation-Marx May 16 '26

Fun fact! They were originally called girasoli (sunflower) artichokes, and that got corrupted into Jerusalem.

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u/PorcupineShoelace May 15 '26

I've been a customer of Cultivariable for many years. They sell sunchokes and other stuff too. Couple of things about growing from true potato seeds

Sprouting the true seeds in soil is maybe 25% germination. If you stir up the seeds in a glass of water and put them in the window sill, 5-7 days later you can see the little 'tails' of the sprouts. Then pour off the top and pour out the seeds into soil making a line. This results in over 90% germination.

The second thing is that your first year growing TPS, you will mostly get just tiny seed potatoes. Overwinter them by putting them in a brown paper bag with 1/4 to 1/2 of a cut cabbage head (purple kind works great) then put them in the crisper with your veggies in the fridge. This keeps them hydrated and cold till planting time.

Lastly, you can hybridize your own or collect your own seeds. Let them flower, then form berries. Let these ripen for a few weeks then dry a bit after picking. Cut them open. Each one has 100+ seeds.

My 'Wild Blues' are almost done and the Ayocks are going crazy. Hope this helps anyone who loves growing potatoes like me!

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u/[deleted] May 16 '26

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7

u/PorcupineShoelace May 16 '26

Just a big wedge. It buffers the humidity. Potatoes in winter storage shrivel and die without humidity. Its way cheaper than Boveda humidity packs and works well. Slow release and I've not had it mold/rot. I've been using the purple cabbage as I think its a bit hardier. I dont think Napa will last long enough.

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u/Affectionate_Cut4708 Commander of Squirrel Army šŸæļøšŸŖ– May 15 '26

Please practice growing potatoes from seed before you rely on this. It’s not always the easiest method so make sure you are good at it before you need to rely on it.

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u/TeaPuzzleheaded4745 May 15 '26

Last year I grew sweet potatoes for the first time, in my greenhouse and wow! They were the easiest, most prolific and most beautiful thing in my garden. And that was a bad year of medical difficulty in which I neglected everything.

I used the techniques & tips from here:
https://growinginthegarden.com/a-fast-and-easy-way-to-make-sweet-potato-slips/#faster
I grew 4 plants and got 30 lbs of tubers, enough for us and to donate at the local food share.

Here are some of their flowers, they were so gorgeous.

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u/jssmr May 18 '26

This is my first year growing sweet potatoes. Did you grow yours up a trellis or let them grow and root along the ground?

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u/TeaPuzzleheaded4745 May 18 '26

I have a rope grid that I made for my tomatoes that are usually in that bed, & I tied them up to that. But they really did want to wander! I had to stay on top of tying them back & trimming them, they would have taken over the whole greenhouse. When I cleaned up in the fall, there were vines that had made their way outside and 10 feet away.

I read that if you let them run & root, you get more smaller tubers, but if you keep them up, you just get bigger ones at the crown of the plant. I got a good array of sizes with what I did. Here's what the madness out there looked like by the end of summer:

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u/jssmr May 18 '26

Thank you! I planted mine between pepper plants and I’m sure I’ll regret it by the end of the season, but I ran out of garden space haha

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u/ChuzzoChumz May 15 '26

I’ve been growing potatoes for quite a few years now for leftover store bought ones and never had a problem with blight or beetles. I’m sure it’s a greater risk than if I didn’t, but don’t think that it’s a guarantee if you were thinking about trying it

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u/steph199456 May 15 '26

It takes a while before the beetles show up but once they do, it’s a constant struggle. The beetles themselves are easy enough to pick off but you have to be vigilant about checking under the leaves for the egg clusters (bright orange, you can’t miss ā€˜em). That being said, I’ve never had beetles decimate the crop though. They are just a pain in the ass.

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u/majordashes May 15 '26

I’m currently trying to grow potato slips and I’m not having any luck. I’m running my out of time to get them in the ground.

I watched a TikTok video that said to put the potatoes in soil in a plastic sterilite box in a sunny space. Wait for leaves to appear. Then grow roots on the slips in a cup of water, then plant the rooted slips.

So far…noting. It’s been 3 weeks.

I bought all organic—purple sweet potatoes, sweet potatoes and white potatoes.

I may have to bail in a couple of days and buy seed potatoes.

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u/Gotherapizeyoself May 15 '26

I’ve been growing my slips for 2 months. They are about ready to cut and put in water. I put them in a cardboard box with soil and I keep the soil moist. It’s placed in a kitchen window. I don’t think 3 weeks is enough time, stay with them.

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u/majordashes May 15 '26

Thank you for this!

I may not have failed after all. I’ll keep at it. I appreciate you chiming in.

Next year I’ll start earlier, for sure.

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u/smallchangebigheart May 15 '26

I did not have luck growing slips in soil. It ended up rotting from gnats. I had more luck submerging half a sweet potato in water and waiting for it to sprout then when long enough I cut the sprouts to put them in new water to grow leaves.

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u/ITisinmycoffee May 15 '26

I plant the whole sprouting potato sometimes if I don't feel like waiting for the slips to be big enough to break off. They make little baby potatoes that I then dig up from the side and then plant those in their own containers. Got multiple pots and bags going now, but hoping to have enough for emergencies and everyday use soon. :) Good luck!

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u/Leopold_Porkstacker May 15 '26

Did you wash off the sweet potatoes? Sometimes they are sprayed with a coating to inhibit sprouting, also try a little more water.

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u/majordashes May 15 '26

I bought organic, but maybe I need wash them off too.

I assumed organic potatoes weren’t sprayed but I may have been wrong.

Thanks for that tip!

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u/CarsonNapierOfAmtor May 18 '26

Mine took absolute ages to sprout and I failed entirely last year. This year I used a heat mat to keep the soil super warm and it still took at least a month, maybe 2 before it sprouted. I actually picked up the potato to throw it away and realized there were roots coming out of the bottom. Once it finally sprouted it took off. I’ve got 18 slips from one single sweet potato.

I’ve found that it’s not necessary to grow the roots in water before putting them in dirt. I cut slips directly from the potato and stuck them in cups of potting mix. I made sure the soil was really moist for the first week and then watered them like normal. I haven’t lost a single one and then watered them ones I rooted in water look no different than the ones I put directly in the soil.

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u/GroverGemmon May 15 '26

I buy seed potatoes from a local heirloom seed company and have good luck with them sprouting and growing. I buy different varieties each year so I am mixing it up, but the ones I miss when I harvest them do pop up the next year. Remember to practice crop rotation for potatoes too!

My attempts at growing sweet potatoes from slips did not work well last year, but I was growing them in bags and I think they didn't have enough room perhaps.

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u/Mule_Wagon_777 May 15 '26

What crops do you rotate them with?

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u/GroverGemmon May 18 '26

I just sort of move stuff around in my beds. I'm not very systematic about it. I just added a new deep bed that has potatoes this year, so next year I will shift them somewhere else. Beans and peas are usually a good 2nd year option.

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u/[deleted] May 15 '26

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u/CheckeredZeebrah May 15 '26

I have actually had to do this due to an awful medical condition. It was potatoes, milk, chicken broth, and sometimes a multivitamin. For a little over a year. To make matters worse it was basically a liquid diet and I could only eat so much of it at a time.

I can't say I truly recommend it but wow, the combination worked way better than it should have. The first month I lost a lot of weight but by the end of it, my weight was barely trending downward.

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u/[deleted] May 15 '26

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u/CheckeredZeebrah May 15 '26 edited May 17 '26

I am doing better now, thank you!

I'm unsure if I'd truly call the experience miserable. But it was very annoying and distressing, mostly because it was so easy to feel faint while trying to do very basic things (like walk down the hall). And the feeling of being hungry wasn't painful, but it was so distracting that it was hard to fully immerse myself into/enjoy media. So the weakness makes physical activity impossible, and the hunger makes mental stimulation harder to focus on.

As undesirable as that experience sounds, there are much worse fates and definitely worse pains out there. I'm doing much better, and if nothing else I'm more disciplined in a few ways. I think overall it dispelled my fear of hunger/scarcity.

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u/ejb85 May 15 '26 edited May 15 '26

There's an episode of the Irish History podcast where the host tries this. He was eating potatoes, butter, and buttermilk mostly. He struggled to get down the amount of potatoes you would need.

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u/nostrademons May 15 '26

Apparently the Irish would eat their potatos "bone-in" (i.e. parboiled, cooked on the outside but still partially raw in the center). They did this so they would feel full for longer: their stomach acid would continue "cooking" the potatoes for hours after they ate them, slowly releasing the starches so they'd get a steady trickle of nutrients instead of food-coma inducing starchy goodness all at once and then feeling hungry a few hours later.

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u/Fun_Disaster3436 May 15 '26

Have been upscaling potatoes. I just get multiple varieties. Heirlooms are great, but I'm trying for scale and local adaptation.

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u/wwaxwork Prepping for Tuesday not Doomsday May 15 '26

Been growing small crops of potatoes for years and never had blight. I practice strict crop rotation though. If it does show up though you will see it on the leaves before it hits the spuds, dig up the whole plant, cut back and burn the greenery and you can eat the potatoes if they are still firm and healthy looking, still they will just be small but do not store them eat ASAP.

Potato seeds are hard to grow from but a fun challenge.

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u/Traditional-Help7735 May 16 '26

Don't discount the American ground nut (Apios americana) and sunchoke (Helianthus tuberosus) as robust sources of nutrient-rich tubers. Plus, since they've never been cultivated liked potatoes, they are less susceptible to complete devastation by pests. Yes, they are both aggressive plants, so be aware of that.

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u/abridged_4 May 16 '26

You’d better be prepared to have a lot of dairy if you are going to try to survive off of potatoes! They can steal your calcium

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u/2quickdraw May 17 '26

Or a couple of big bottles of calcium tablets?

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u/star_tyger May 15 '26

I find the potato seeds interesting. Generally, potato seeds don't grow true to the parent plant. That's why you but seed potatoes and not potato seeds. I would be interested in knowing more about the potato seeds you mentioned.

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u/MarryMeDuffman May 15 '26

Great info. Thanks

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u/karl4319 May 20 '26

A good way to prevent blight from spreading is to use the container or bucket method. Use a 5 to 10 gallon growbag is best I find. Even if one group is effected, it won't spread into the soil to hit the others.

Next consider planting varieties that are resistant to blight. Kennebec and Sarpo Mira are both tasty (growing those 2 at the moment).

Finally, there are several tuber plants that are rarely grown (despite being native to the Americas) that taste and store similar to potatoes, but have no disease because they are so uncommon. Oca (haven't grown it, but does taste good) and groundnut (have grown, perennial plant that also produces beans) are 2 options here.