Last we checked in, they were hanging out all happy in their coffee sack bag planters, but not really showing any major growth (pictured above). After letting them sit and do their thing for about a month, the vines have really begun to take off:
We’re at the point now where we’re considering filling more dirt into the bag to cover the lower portion of the vine and just roll the sides of the bags up as we add dirt.
We haven’t been squeezing or poking the bottom of the bag to feel if any potatoes have begun to form — though we will admit it’s been tempting. We’re just patiently waiting and watching, in hopes it will flower in late August and produce something in the early fall.
In the meantime, we decided to see if we could get the same project to work with a couple purple potatoes we had laying around that had begun sprouting from their eyes:
Without doing any research first, we just put toothpicks in the sides of the potatoes and suspended them in a glass filled with water to sit in the windowsill:
After a couple weeks, they kind of went crazy!
We like to call these the mad scientist project — what a difference from what the sweet potatoes looked like when they were beginning to sprout at this stage.
While the slips grew in thicker with smaller leaves on these guys, they pretty much sprouted and grew in the same way our sweet potatoes did — except the roots took shape right off the potato instead of having to twist off the slips and let the roots grow in water.
Once the purple potato vines were about 5-6 inches tall, we twisted them off the root potato and transplanted them into a new rolled up coffee sack planter next to our sweet potatoes.
So far they seem to have taken root and continued to grow:
Here they are after about 1 1/2 weeks in the bag:
We are hopeful something will come of these little potato plantings and will be sure to keep updating their progress here on the blog!
Keep up with our full container potato growing experiment and learn how to get your own started here.