2026 Tanager Farm Adaptation Projects

Background

This is our third year participating in the Going to Seed Farmer Support Program. I’m excited to be in year 3 and 4 with some of our adaptation crops and I hope to start seeing more noticeable progress toward developing our own locally-adapted populations.

This year our agreement is to document our progress growing several crops: grain corn, potatoes from true seed, barley, maxima squash, muskmelons, favas, and tomatillos. I’ll probably give updates on a few other crops we’re working on too.

Overall our goals with these adaptation projects are to develop populations that taste great and thrive in our context with minimal inputs. Many of our populations were big mixes that have crossed for several seasons, and now we are planning to cull a bit more aggressively to favor happy and tasty plants. In some cases we plan to host community tastings in order to make the selection process more participatory and engaging.

We grow market vegetables and seed crops at Tanager Farm, but I’m also involved in the development of a new local seed collective and nonprofit here in the Portland, OR metro area called By Hand Seeds. Among other things we are developing a local seed collection and a “Cultural Memory Bank” to document stories of seeds, growers, and food communities. Check out our poster of 2026 varieties below and our new website with lots of cool content.

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Love the website Spencer! Look forward to hearing more about your projects this season- what do you have going with the tomatillos?

Thanks, Jen! New updates incoming!

For tomatillos, we’ve found that they tend to grow well with pretty minimal care, which is cool. So we sometimes still transplant a few if we want early harvests, but also direct seed and let volunteers come up. We tend to want them almost exclusively for salsas and green sauce, so we are working with a green grex population. Everyone loves how the purples (and the yellow Malinalco ones) look but they tend to make less attractive salsa.

So I actually love working with tomatillos cause it’s so easy. Basically just direct sowing them and saving some seeds from happy plants. Sometimes we’ll let fruits over-ripen a bit from the prime eating stage.

Spring Updates

Grain Corn

This is our first time growing a larger quantity of grain corn for food, though we’ve been growing sweet corn for a few years. We are growing 4 varieties/populations of grain corn; each of the 4 is grouped together in blocks, with all 4 blocks are together in one milpa-style field. So we can track each variety but there will be lots of crossing.

Our 4 seed populations are Painted Mountain from Uprising Seeds, a purple selection of Painted Mountain called Purple Mountains from Adaptive Seeds, a red selection of Painted Mountain from our friend Adam from Wild Mountain Seeds, and Open Oak Party Mix from Adaptive Seeds.

It was hard choosing varieties to grow because we are still unsure of what uses/traits we want. The main idea is productive, beautiful, well-adapted corn that can be used for cornmeal, masa, and hominy. We’d like to grow a corn population for many years in a milpa-style setting, so it’s also interesting to consider what traits are useful in that context. I love the look of multi-colored corn but have heard that could muddy the flavor profiles and perhaps a single color would be better.

We plant corn 2 seeds together every 2 feet, leaving space to come back later to sow squash seeds in between the corn plants.

June 27 - Milpa-style field with grain corn

June 27

July 3 - corn, squash, beans, sunflowers, purslane, amaranth, calendula, cosmos

Potatoes

This year we have a small number of potatoes grown from true seed (TPS), in addition to lots of normal clonal potatoes for our CSA distribution. But for the first time we also planted some of the spuds from last year’s TPS potatoes, which can supposedly yield better and larger potatoes than in the first year from TPS. Also we like the idea of developing a unique potato variety from TPS that can then be clonally grown like normal potatoes.

We sow TPS in a flat in the propagation greenhouse around March 15 and transplant to the field when it warms up and plants are maybe 4 inches tall. Some people plant clonal tubes around St. Patrick’s Day, we tend to plant our tubers around April 15.

June 27 - TPS potatoes, propagated from seed this spring indoors in a flat and transplanted. Was a bit late, plants started pretty small and sad, are now catching up and getting big.

June 27 - potatoes grown from clonal spuds that were grown last year from TPS

Barley

Several folks on our farm are interested in barley. My coworker Adrienne grew a beautiful winter barley that was recently harvested. I’m in the second year of working with a diverse spring-planted barley, which is currently plumping up nicely. Last year we got a decent harvest from a wide mix of hulless varieties, but it was a small experimental area to get a grex population. This year we planted about 800 sq ft in the hopes of having enough to eat ourselves a few times through the winter. We’ve heard of surprisingly good yields from small plots of barley in our region, so if all goes well we might explore planting an even larger quantity in the future. We are still exploring the best methods for threshing and winnowing on larger hand-scales.

For spring barley, we direct sowed half of our seed April 15, and the other half a couple weeks later, to see if there’s a difference with timing. The earlier block seems happier. Our climate is great for barley, and we don’t need to irrigate since rainfall is sufficient to produce a good crop. This year we had an unusually late week of spring rain, which the barley seemed to enjoy.

July 1 - dryland barley

July 1 - dryland barley and favas, in between dryland garlic and native plants

June 1 - Adrienne’s winter barley almost ready for harvest

June 1 - purple barley

Maxima Squash

This is year three of working with this diverse maxima population, so we are excited to potentially see some new traits and expressions as the grex changes. We direct sow our maximas in our milpa-style field, so a seed goes in every two feet in between growing corn plants that got a head start. Photos coming soon, but see photos above with corn.

Muskmelons

We were very excited about our good harvest of muskmelons last year, and we did fairly extensive taste testing to select seeds to replant this year. Tastings were pretty informal, but the general protocol was that if several people thought a fruit was tasty, most seeds would be saved; if nobody enjoyed the fruit, seeds were composted; if only some people liked a fruit, some seeds would be saved. This year we might try to be a bit more organized and have a little evaluation form.

June 27 - muskmelons

June 27 - muskmelons

Favas

This is year three of working with this diverse fava population, and the first season that we grew it out under exclusively dry land conditions, meaning no supplemental irrigation beyond rainfall. From this very small sample size that involves lots of variables, it seems like this year’s crop is a bit smaller in stature but less affected by pests and disease.

July 2

July 2 - we flag plants that we like to avoid harvesting for food and to prioritize within our seed population.

Not nearly as much pests and disease as in the past, but a few plants got aphid infestations and were culled.

Some pods are long and singles

Some are smaller and clustered like bananas

Some have single stems

Some have multiple stems and branch out, probably higher yielding per plant but takes up more space.

Some fresh bean harvest. For fresh eating, we pick when beans are plump in the pods but before they get hard and tough. We pick fewer pods from the best plants, to leave more to fully ripen for seed.

Tomatillos

This is year four of working with a green tomatillo population. We usually start a few tomatillos in cell trays around April 1 and transplant them in May when they are 6-8 in tall. However we are starting to see success from direct sown tomatillos, though these plants tend to take longer to reach maturity and fruit. Personally I’m willing to wait a bit longer for tomatillo harvests if it reduces the labor overall. Photos coming soon.

Bonus

June 27 - Colorful mizuna grex population

June 24 - One of the survivors of our wild spinach trial, a long-term attempt to develop symphylan resistance by crossing domesticated spinach with wild spinach. The wild spinach seemed vulnerable to symphylans, but a few plants may be showing signs of resistance.

July 2 - Callaloo-type amaranth from the milpa-style field.

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July/August updates

Weather this summer has been unusual. We’ve had some spikes of hot weather in the 90s, but overall it’s been a relatively mild summer here. We also had a string of thunderstorms in July, which is very unusual here. Now into full dry season, with some days of pretty bad smoke from nearby wildfires. Luckily skies have cleared for now and crops continue to grow well.

Grain Corn

Our milpa-inspired section is looking great. The grain corn is fruiting and already plumping up. It seems the Open Oak Party Mix might be a standout but we still have some time before harvest.

8/1 - Painted Mountain grain corn

8/1 - milpa-inspired field

8/1 - Open Oak Party Mix end of the field

8/1 - There’s corn, squash, beans, amaranth, sunflowers, tithonia, tomatillos, magenta spreen, cosmos. I’m interested in finding other compatible plants, seems like there’s a need for another ground cover that gets along well with others…considering a native phacelia and native closer that a friend is growing.

Potatoes

Potatoes from TPS are doing well! I felt like I neglected our TPS seedlings by planting out a bit late and not watering or weeding much, but now they are growing strong. Our separate row of clonal TPS (tubers saved from last year’s TPS) also seem to be doing extremely well. I’ve seen some larger tubers poking out of the ground, and tons of fruits.

8/1 - Potatoes growing from saved tubers that were grown last year from TPS.

8/1 - Same as above, tubers planted from last year’s TPS.

8/7 - A couple plants have these huge clusters of fruits.

8/7 - Multiple fruit clusters from a single plant. You kiddin’ me? I’m curious if anyone else has seen this level of fruiting.

8/1 These are the potatoes started from TPS this year. Started very slow but now looking pretty good.

Barley

Barley harvest is underway! We planted a very diverse hulless mix and we are seeing some significant variation in days to maturity, so I’m thinking that we’ll split the harvest and seed saving into two groups, earlier vs. later maturing, in order to make future harvests more consistent in ripeness. Some really lovely variations in phenotype. Will report back with our yields.

8/3 - Some types dry and ready for harvest, some still finishing up

8/3

8/3 - Black barley

8/6

8/6 - variation; there’s browns, purples, blues, blacks; both 2-row and 6-row types

Maxima Squash

Our maximas are doing well in the milpa-inspired patch. As last year, they seems to lag a little bit behind some of the pepos in vigor, but we are seeing some nice fruits. Better photos coming!

Muskmelons

Muskmelons in the greenhouse are looking great, a bit less so outdoors in the field. I think we’ve neglected the field melons quite a bit more, which will likely impact our yield this year, but might lead to the expression of some valuable genetics from plants don’t mind some neglect.

7/27 - muskmelons

7/27

8/1

Favas

Dryland favas plants definitely seemed smaller than if they had received irrigation, but we still got a decent yield of dry seeds. Looking forward to continuing to grow favas under dryland conditions to see if we notice any improvements over time. We also still have lots of weevil pressure, which can be frustrating. I wonder if it’s at all possible to breed for weevil resistance. I haven’t noticed particular fava types showing resistance, but we have seen some common beans that seem more resistant.

8/1 - Favas waiting to be revealed by students in seed keeping workshops

Bonus

8/1 - watermelons

8/6 - Watermelons had pretty uneven/low germination for some reason, but the ones that made it are looking pretty good. Not as many individuals made it as last year, but the survivors seem more vigorous this year.

8/1 - Diverse runner beans and Borlotti common beans poppin’ off!

7/22 - Runner beans with bicolor flowers, with bee. We see tons of hummingbirds in the runner beans.

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Ahh, seeing that Painted Lady runner beans have bicolor flowers!