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When to Plant
Sweet Potatoes in Idaho City, Idaho, United States of America

Planting vegetable seeds at the correct time is the most important step for getting the most out of your garden. Knowing exactly when to plant sweet potatoes in your garden in Idaho City, Idaho, United States of America will increase growing success and provide better yields.

Check optimal planting dates regularly for best results because the weather, and our results, change daily. 

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The optimal time to plant sweet potatoes in Idaho City, Idaho, United States of America is  - . The best day is with a success rate of %.

 

Anywhere between 70-100% is great. If consistently below that you may want to start growing from seedling or young plant, or possibly grow in sheltered environment

Compatibility
Avg. Temp (F)
Soil Temp (F)
Humidity
Precipitation
Sunlight Hours
JAN
FEB
MAR
APR
MAY
JUN
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AUG
SEP
OCT
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Growmigo - Today Graph

Optimal time frame to start

Frost free days

Grow period

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Important sweet potato growing information relevant to your exact garden location in Idaho City, Idaho, United States of America:

The total number of frost free days for your garden in Idaho City, Idaho, United States of America is days, but the total number of optimal days to plant sweet potatoes is days.

For best results you should start planting sweet potatoes in days starting .

Gardening Data Sources

for Sweet Potatoes

University Research

Cooperative Extension

Gardening Websites

Gardening Blogs

Other Sources

Gardening Data Sources

for Sweet Potatoes

How to Grow Sweet Potatoes in Idaho City, Idaho, United States of America

Sweet potatoes are a tropical plant thought to have originated in Central and South America, brought back to Europe by the Spanish explorer, Christopher Columbus, during his expeditions to the New World. The first attempts at growing sweet potato in Europe were recorded in Belgium and England in the 1500’s with little success. The reason for their lack of success is that sweet potatoes require warmer climates, especially tropical climates (the hotter the better), which is not the climate in Europe. New plants are obtained by planting roots, cuttings or slips, but the quickest and easiest way to grow sweet potatoes is to use cuttings. No one ever uses seeds to grow sweet potatoes other than professional breeders. Even most seed suppliers in the market do not offer sweet potato seeds but rather sell slips. Sweet potatoes may look like yams, but they are not yams and they belong to two different botanical families. Yam is a starchy edible root, which is not sweet, with dark, rough and hairy skin, native to Africa. Sweet potatoes are sweet, have thin, smooth skin and are native to the Americas. The sweet potato botanically belongs to the Morning Glory family, which is the common name for over 1,000 species in the Convolvulaceae family. The yam belongs to the genus Dioscorea, related to lilies and grasses.


For more real-time hyper local detailed growing information download the GardenWeather App on IOS. It is now the leading gardening and weather app, more accurate than The USDA zone map for frost dates. GardenWeather™ is a technology and agri-tech startup providing real-time hyper local planting and gardening recommendations enabling home gardeners and homesteaders to make data-driven gardening decisions.

Use these images to know if your sweet potato is heading in the right direction and growing properly. Exact number of growing days varies for each sweet potato variety. Below is the average number of days for each stage gathered from many different varieties.

Germination
15 days
Young seedling
6 days
Mature seedling
28 days
Young plant
41 days
Mature plant
43 days
Total days:
133 days

Germination
15 days
+
Young Seedling
6 days
+
Mature Seedling
28 days
+
Young Plant
41 days
+
Mature Plant
43 days
=
Total Days
133 days

Sweet Potato Germination Guide

(Stage 1: Germination)

Germination is the process by which a plant grows from a seed. It is the first stage of the plant growing process and it begins when the seed is sown and ends when the radicale emerges out of the seed.

All seeds require proper soil temperature, moisture, air and light conditions to germinate successfully. However, during the germination stage the seeds require more soil warmth and moisture than light exposure.

Seeds respire just like any other living organism, requiring oxygen and producing carbon dioxide (CO2), so it is crucial to use a soil media that is sufficiently aerated so that the seeds do not “suffocate”.

0% of our growing experts recommend to directly sow sweet potato seeds into the ground. What is direct sowing and why do I care about it?

Required
Optimal
Required germination period

7-21 days

(1 sources)
Growmigo - Germination Period
Optimal germination period

13-20 days

(3 sources)
Required soil temp.

59.8º-85ºF / 15.4º-29.4ºC

(4 sources)
Growmigo - Soil Temp
Optimal soil temp.

64.8º-80ºF / 18.2º-26.7ºC

(4 sources)
Required day temp.

69.3º-85ºF / 20.7º-29.4ºC

(3 sources)
Growmigo - Day Temp
Optimal day temp.

74.5º-83.8ºF / 23.6º-28.8ºC

(4 sources)
Required night temp.

69.3º-80ºF / 20.7º-26.7ºC

(3 sources)
Growmigo - Night Temp
Optimal night temp.

71º-75ºF / 21.7º-23.9ºC

(3 sources)
Growmigo - Seed Depth
Optimal seed depth

3.2 inches / 8 cm

(3 sources)
Growmigo - Plant Spacing
Optimal plant spacing

14.5 inches / 36.8 cm

(3 sources)
Growmigo - Row Spacing
Optimal row spacing

23.7 inches / 60.1 cm

(3 sources)

Sweet Potato Growing Guide

(Stages 2-5: Growth)

Once seed has germinated and radicale has emerged the second stage of the plant growing process begins, developing from radicale to cotyledon -the embryonic first leaves of the seed forming a young seedling.

During the third stage of plant development cotyledon develops to 3-4 true leaves, stem begins to grow, becoming a mature seedling.

In the fourth stage the mature seedling develops to a young plant, ready for transplanting.

The fifth stage of plant development the plant is fully mature bearing fruit and/or flower.

The following guidelines apply to all of the sweet potato plants’ needs during stages 2-5 from radicale emergence to full maturity. During these stages sunlight becomes a more active participant in plant growth and development than in the germination phase.

Soil pH is an important factor during these stages as well. What is pH and why is it important?

Required
Optimal
Required soil temp.

64.1º-NANºF / 17.8º-NANºC

(9 sources)
Growmigo - Soil Temp
Optimal soil temp.

67.1º-80ºF / 19.5º-26.7ºC

(2 sources)
Required day temp.

69.1º-86.9ºF / 20.6º-30.5ºC

(3 sources)
Growmigo - Day Temp
Optimal day temp.

75.5º-86.6ºF / 24.1º-30.3ºC

(5 sources)
Required night temp.

69.1º-71.3ºF / 20.6º-21.8ºC

(3 sources)
Growmigo - Night Temp
Optimal night temp.

67.8º-70ºF / 19.9º-21.1ºC

(4 sources)
Required sunlight hours

6-12

(10 sources)
Growmigo - Sunlight
Optimal sunlight hours

8-10

(1 sources)
Required soil pH

4.6-6.9

(12 sources)
Growmigo - PH
Optimal soil pH

5.6-6.5

(11 sources)
Required watering amount

1.1-1.2 inches / 2.8-3 cm (per week)

(10 sources)
Growmigo - Watering Amount
Optimal watering amount

1.7-2.9 inches / 4.3-7.3 cm (per week)

(2 sources)
Growmigo - Seed Depth
Optimal depth

3.6 inches / 9.2 cm

(2 sources)
Growmigo - Plant Spacing
Optimal plant spacing

13.8 inches / 35 cm

(4 sources)
Growmigo - Row Spacing
Optimal row spacing

21.7 inches / 55.1 cm

(3 sources)

How difficult is it to grow sweet potatoes?

Growing sweet potatoes, or any other vegetable for that matter, is not hard, however some plants require more attention and care than others depending on the following factors:

 

Are you starting to grow your plant from seed? seedling? young plant? Depending on what stage plant you choose to plant will impact growing difficulty and patience.

The length of the growing season for your exact garden location.

If you have a short growing season and you want to start growing from seed then you may need to start the growing process in a sheltered environment (greenhouse or inside your home) which will require more involvement in the growing process.

Whether you direct sow in the garden or start in trays and then transplant also affects the level of difficulty

Growing difficulty level - 0

Growing patience level - 0

Companion Planting Guide

for Sweet Potatoes

What is companion planting?

Companion planting is intentional planting of two or more vegetables and/or flowers next to each other in order to positively impact plant health and yield

good
Companion plants for sweet potatoes
Growmigo - Companion Planting
Dill
Growmigo - Companion Planting
Thyme
Growmigo - Companion Planting
Parsnips
Growmigo - Companion Planting
Beets
bad
Companion plants for sweet potatoes
Growmigo - Bad Companion Planting
Squash

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