Oca (Oxalis tuberosa) – an Andean root crop that is a challenging plant to grow in the Southeast for two main reasons. First, it doesn’t really like it when it gets hot (much above 80F), so getting the plants to survive happily through the summer can be problematic. Second, the tuber formation is triggered by short days, which means a late winter harvest is needed to maximize yield. Sadly, in a normal season, our first frost will kill oca before significant tuber production.
OUR WORK
In 2020 the Utopian Seed Project is growing 10 tubers planted from Cultivariable breeding stock, which have been selected (among other things) for longer day length tuber formation. These are actually ‘breeding-seconds’, which means they didn’t make Cultivariable’s cut but are good trial material for us in the Southeast. We have successfully grown oca in buckets before, which meant they could be moved around to maintain optimum conditions and protected from early frosts. This year we’ll try a mix of planting methods and plant protection.
A little update as we prep for this cold snap... 1-2 Oca (beautiful purple under the leaf)
3 About 130 true potato seedlings
4 Ube going crazy
5 Yacon looking good from @cultivariable
6 About 100 dahlia seedlings we're assessing for tasty tubers for @cultivariable
#experimentalroots #experimentalfarm #ube #dahlia #trueyam #truepotatoseed #oca #andeanroots #yacon #boliviansunroot
A friend recently shared a small amount of mashua and ulluco for me to try. We also have a 100 oca seeds starting to germinate, with the hope we can stumble upon a strain that copes with our hot summers and forms tubers early (optimistic hopes!). This is part of a participatory breeding project we're taking part in with @cultivariable. Definitely more to come on this project 🙂 #experimentalroots #oca #mashua #ulluco #seedbreeding
A mixed batch of 'breeding' seconds of oca from @cultivariable went into pots today as we continue our search for oca that can survive our summers AND produce early fall tubers.
The next two pictures are a couple of new varieties of mashua, also from Cultivariable. Mashua is basically a tuber forming nasturtium, which is a pretty exciting concept. Also available in a range of beautiful colors. We failed to grow this a couple of years ago, so here's to Take II.
#oca #experimentalroots #mashua #andeanroots
I've been a big fan of @cultivariable for a while now, so when they put out an open call for participatory plant breeding (selection in this case) then I couldn't resist. Here's to finding some awesome new varieties 🙂 We'll be growing an Andean Potato cross (blue and red), Oca, and Dahlias.
#experimentaltrials #experimentalroots #andeanpotatoes #edibledahlia #oca
Oca (Oxalis tuberosum) is an Andean root crop that I dearly want to grow in this region because they're so beautiful! There are a few challenges to get decent production in the Southeast (long day photoperiod trigger for forming tubers, unhappy in high heat).
This year I'm trying a range of different varieties from @cultivariable to see if any hold up better in our hot summer months.
#Oca #tuspoca #andeanroots
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