Growing potatoes in Colorado is a great way to produce a nutritious, delicious crop. Colorado has the perfect climate for growing potatoes, with cool nights and warm days, and plenty of sunshine and moisture. Potatoes can be grown from late April through the end of October, depending on the variety. Potatoes thrive in the Colorado soil, which is high in organic matter and well-drained.
When planting potatoes, choose a spot in full sun and dig trenches about 8 inches deep, adding compost to the soil for fertilizer. Water your potato plants regularly, and use mulch to help keep the soil cool and moist. Harvest potatoes when the plants begin to die back, typically after about three months. Colorado potatoes are a great addition to any meal, and with the right care, you can have a great harvest!
Colorado’s Hardiness Zones And Climate
Colorado has a diverse climate with considerable variations in temperature and rainfall across regions. Growing zones 4 to 6 are located in the northern, central and eastern parts of the state, and they experience cold winters and warm summers. Snowfall is common in the winter months, with smaller snowfalls occurring in the spring and fall. Precipitation is generally lower in these zones than other parts of the state. Summers are warm, with temperatures typically reaching into the mid-80s (Fahrenheit) during the day and dropping to the mid-30s or lower at night. Winters are cold, with temperatures often dipping below 0°F in the northern parts of the zone
Different varieties of seed potatoes
When selecting seed potatoes for growing in Colorado, it is important to be mindful of the variety’s days to harvest and the length of time you have before you want to harvest them.
Early-season varieties such as ‘Yukon Gold’ and ‘Red Norland’ have fewer days to harvest and should be planted as soon as possible for harvesting in late summer.
Mid-season varieties such as ‘Russet Burbank’ and ‘Kennebec’ have more days to harvest and should be planted in late April or early May for harvesting in fall.
Late-season varieties such as ‘Cara Russet’ and ‘All Blue’ have the most days to harvest and should be planted in late April or early May for harvesting in early winter. Be sure to select varieties with the right number of days to harvest for your intended harvest date. Some good potato varieties for Colorado include:
- Russet Potatoes: 85-95 days
- Yukon Gold Potatoes: 90-110 days
- Red Potatoes: 80-90 days
- Purple Potatoes: 90-110 days
- Fingerling Potatoes: 90-120 days
- Sweet Potatoes: 90-120 days
- White Potatoes: 90-100 days
- All-Blue Potatoes: 95-105 days
- Yellow Finn Potatoes: 85-95 days
- Kennebec Potatoes: 85-95 days
When To Plant Potatoes In Colorado
In Colorado, potatoes should be planted in late April to early May. However, this can vary depending on the region and soil temperature. Potatoes are cold weather crops and will not do well in warm soil. Early planting is recommended for higher yields.
- Zone 4: Around April 30th
- Zone 5: Around April 15th
- Zone 6: Around April 7th.
How To Plant Potatoes In Colorado
Begin the planting process for seed potatoes by tilling the soil to a depth of 8 inches and incorporating organic compost. Once you have done this, find a sunny location that receives at least 8 hours of direct sunlight and place the seed potatoes.
Plant the seed potatoes with the “eyes” facing upward, leaving a distance of 8 to 10 inches in between each. Cover the seed potatoes with a layer of soil that is 3-4 inches thick, and make sure to water them adequately. As the potatoes start to sprout, add more soil to the rows to keep them adequately buried.
Water the potatoes on a regular basis and remove any weeds from the area. For those living in hot and dry climates, you may want to cover the soil around the potatoes with straw, although this is not essential.
Caring For Potato Plants
Caring for potato plants is pretty easy – they’re incredibly hardy and generally no-fuss. Potato plants need full sun and well-drained soil to thrive. They should be watered deeply and regularly, allowing the soil to dry out between waterings.
Fertilizing is also important for optimal growth. Potato plants need a balanced fertilizer with equal parts nitrogen, phosphorus, and potassium. This should be applied every four to six weeks, depending on the soil’s nutrient content.
It is also important to keep the soil evenly moist, as potatoes do not tolerate dry or waterlogged conditions. Mulching around the potato plants can help retain moisture and reduce weeds.
When To Harvest Potatoes In Colorado
There are two sure ways to know your potatoes are about ready to harvest! The first is counting backward from your current date to their planting date. Potato varieties have an approximate number of days to harvest, so consult the days to harvest for the particular variety of potatoes you’ve planted. If you aren’t sure, assume it’s around 100 days.
The appearance of your potato plants is another dead giveaway. You will know your potatoes are ready to harvest when the foliage begins to turn yellow and die back. Your plants will go through an entire flowering cycle, which is nice because the flowers are really beautiful.
Allow the soil around the plants to dry before harvesting, but don’t allow it to be dry for too long. Once harvested, inspect the potatoes carefully- they should be firm and free of green or soft spots.
Carefully dig up the potatoes with a garden fork, taking care not to damage the potatoes in the process. Once the potatoes have all been dug up, brush off any excess soil and inspect them for any damage. Discard any potatoes that are damaged, as these are not suitable for long-term storage.
Finally, gently place the potatoes in a cool, dry, and dark area for storage. It is important to only store undamaged potatoes, as damaged potatoes can quickly rot.