Ulluco: More ulluco seed pictures

Yesterday I harvested two ulluco (Ullucus tuberosus) seeds – possibly the first collected anywhere since the 1980s. I harvested a third ulluco seed today and have counted an additional 21 on the plants.  I also discovered a third plant with seeds today, of the variety BK10425.2, so I now have seeds on two different varieties. […]

Ulluco: For my second true seed trick…

I bring you ulluco (Ullucus tuberosus) seed! True seeds of ulluco (Ullucus tuberosus) I’ve been watching these tiny ulluco nuts maturing for the past couple of weeks with nervous anticipation.  I wasn’t even sure that they were actually seeds until two days ago as they dried down.  Ulluco flowers sometimes leave behind a dried husk […]

Oca: Growing from seed

These are the instructions that I am sending out with packets of oca (Oxalis tuberosa) seed. These instructions reflect the techniques that have worked for me so far, but I am sure that there is room for improvement.  If you find a procedure that works better, please let me know. Oca seed does not appear […]

Oca: Around the oca patch

We spent a few hours collecting oca (Oxalis tuberosa) cuttings with maturing pods today – about 250 in total.  That should translate into a lot of seed.  With more than 4000 seeds as of today, it is tempting to get lazy and let these open pollinated pods go, but there is no guarantee that we’ll […]

Oca: Seedling progress

We’re up to 23 oca (Oxalis tuberosa) seedlings from my early August sowing of 60 seeds. The earliest are now putting out true leaves and starting to look like proper oca plants. As is usually the case with seedlings, growth has picked up considerably since they formed true leaves. We’re a month away from the […]

Oca: Germination

On August 7th, I started a quick and dirty experiment to see if any of my oca (Oxalis tuberosa) seeds would germinate. Most seeds have some dormancy and won’t grow until time has passed or specific conditions of temperature and humidity are reached. I separated 60 seeds into three groups of 20. I soaked each […]

Oca: Seeds from cuttings

Six to eight inch cuttings are just right I wrote a couple weeks ago that I was going to try a few experiments to determine how to harvest the most oca (Oxalis tuberosa) seeds with the lowest losses (the two kind of go hand in hand). The verdict is in: indoor cuttings have provided significantly […]

Oca: 1000

Today, my oca (Oxalis tuberosa) seed count stands at 1,022 for the year, which means that I have achieved my goal, with three or possibly four months left before the first frost. I have 123 pods maturing on cuttings indoors, which should yield about 900 more seeds by the averages and more than that bagged […]

Oca: Thoughts on flowering

I’ve had pretty good luck this year getting oca (Oxalis tuberosa) to flower and set seed.  I’m growing enough plants to start to perceive some patterns regarding flowering.  This information may be helpful to prospective oca breeders, but could also be misleading, based on such a limited period of time. Climate I have not grown […]

Oca: Flower forms

I use the descriptors established by the International Institute of Phytogenetic Resources for the oca (Oxalis tuberosa) profiles on this site.  They define three flower forms: round, starlike, and pentagonal.  Here is what each of them looks like: Round is defined as 75% or greater overlap of the petals. Round oca flower Starlike is defined […]