When To Plant Onions In Idaho? - Krostrade

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When To Plant Onions In Idaho?

If you’re trying to figure out when to plant onions in Idaho, know that the best time to do so is in spring simply because onions are a cool-weather crop in its initial stages of growth. If you live in mild-winter areas, you can choose to grow onions during fall or winter. In other words, onions grow their tops in a cooler climate, while they form their bulbs when the weather’s warmer.

When To Plant Onions In Idaho

When To Plant Onions In Idaho And Idaho’s Plant Hardiness Zone

The best time to plant onions in Idaho depends on your area’s hardiness zone. It’s important to know the frost dates so you can plant your seeds at the right time.

To ensure an abundant harvest, make it a point to plant your onions at least four to six weeks before the last frost. You can plant it earlier if you initially grow it indoors.

For the state of Idaho, they fall under the USDA plant hardiness zones 3 to 7. Take a closer look at the planting schedule for onions (start seeds indoors to plant seed/transplant to harvest):

  • Zone 3: n/a
  • Zone 4: Mid-April to Mid-September
  • Zone 5: April to September
  • Zone 6: Mid-March to August
  • Zone 7: March to August

For more accurate information, make sure to stay updated on your local weather.


What Are Onion Sets?

Onion sets are small and dry onion bulbs grown from seed in the previous year. They harvest the onion as an immature bulb rather than allowing it to mature. These bulbs are then stored until the next planting season.


When Should Onion Sets Be Planted?

You can plant your onion sets in early spring. They’re very easy to grow and you can harvest them quicker since they have already started the initial growth phase.

However, it’s important to note that onion sets are limited to a few varieties. In most cases, you can only plant yellow, purple, and white onions.


How Many Onions Do You Get From One Plant?

You will only reap one onion from one bulb. Even though you can only get one onion, there are other ways you can benefit from one onion plant:


Green Onions

Most people are familiar with green onions (also known as scallions); the green stems that grow above the bulb. If each stem is one scallion, you can expect to harvest around 3 to 11 scallions per onion bulb.


Onion Flower

Once your onion plant flowers, you can collect the seeds from the flower to plantgardenbetty.com/bloomin-onion more onions. Make sure to harvest the seeds before the flower blooms.


How To Grow Bigger Onions

Here are some of the tips you should remember if you want to grow bigger onions:


Plant them early

Your onions will need all the time they can get to grow big.


Water your onions regularly

Just like most plants, it’s important to keep your onions well-watered. The more water you give them, the plumper your onions get. So, make sure your soil stays moist.



Adding mulch around your onions will prevent weeds from growing. Otherwise, the weeds will absorb all the nutrients and water, and it will spread harmful diseases to your plants.


Plant them in good soil

Onions thrive best in loose, sandy loan soil. Onion bulbs that can freely expand will grow the largest. On the other hand, soil compaction restricts the growth of the onion.


Leave your onion until the tops resemble paper

Once you notice that the tops die back, leave them in the ground for up to two weeks until they fall over. Your onions will continue to grow and absorb water, so make sure to leave them there for a few weeks.


How Many Days Does It Take For Onions To Grow?

Onions take time to mature. For scallions, they will be ready to harvest within three to four weeks after planting. For dry bulb onions, it usually takes 100 to 175 days before they mature.


Growing Onions In Mini Greenhouses

When planting crops in Idaho, you need all the help you can get to reap bountiful vegetables and garden plants. As mentioned, growing big and healthy onions take time. Mini greenhouses let you extend your growing season, allowing you to grow big onions.

One of the advantages of mini-greenhouses is that it doesn’t require significant investment. It’s practical and cost-effective, especially for those who don’t want to commit to having a full greenhouse.

Whether you’re planning to grow onion or off-season vegetables, a mini-greenhouse allows you to enjoy the benefits of growing plants that normally can’t thrive in Idaho.

Here are other reasons why you should consider getting a mini greenhouse:

Control the temperature

When exposed to the elements, your plants may be subjected to extreme heat and cold. This negatively affects your onions and other plants, hampering their growth.

Placing them in an enclosed space with a controlled climate ensures that they are safe, regardless of the temperature outside. You can even add heating and ventilation systems, timers, lights, and shades.


Prevent harmful pests and diseases

Onion flies, lesser bulb flies, and botrytis are some of the pests and diseases that affect onions. These pathogens cause stress and stunt growth. Placing them in a greenhouse allows your onions to focus on healthy growth, rather than repair and defence.


Produce more quality onions

By keeping your onions happy and healthy, you can improve their production and growth. Limiting exposure to extreme weather conditions, pests, and diseases, you create a healthy environment for your onions to grow. This improves the quality and quantity of the onions you harvest.


Final Thoughts

Planting onions in Idaho can be a pleasurable and rewarding experience if you have the right tools and resources. Mini greenhouses are suitable for any type of property, whether you live in a small apartment or a house with a backyard.

Now that you know when to plant onions in Idaho, the next step is to consider investing in a greenhouse. If you’re looking for high-quality and affordable mini-greenhouses, Krostrade offers different options for every gardener. Check out our products today!

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How To Grow Mexican Heather. 3 Steps To Success

How To Grow Mexican Heather. 3 Steps To Success

You only need to overcome three steps to know how to grow Mexican heather. This compact perennial is unique not just because of its looks but also with how easy it thrives amidst hot conditions. However, do note that Mexican heather plants don’t do as well in cold regions. 

Before you give them up, you may also find it comfortable to grow Mexican heather in the greenhouse. Remember that the stable indoor conditions in the greenhouse make it ideal for starting plants. However, it can also offer protection to plants that don’t tolerate extreme climates. 


How To Plant Mexican Heather


Step #1. Planning and preparation



The first step in growing Mexican heather is planning and preparing to guarantee success. You want to check your calendar on when is the best time to plant Mexican heather. If your climate is similar to the Mediterranean regions, you can easily plant Mexican heather at any time

However, it’s generally ideal for growing this plant late in fall, so it has established itself before the temperatures get challenging. And as you can assume, you will need to grow Mexican heather in the greenhouse if your area has harsh winters. Starting Mexican heather from seeds indoors will guarantee flowers in the summer.



After determining when to plant Mexican heather, you must prepare the site for your plants. Remember that the location is crucial to guarantee the steady growth of any plant. Therefore, you may benefit from starting Mexican heather indoors if your climate is fluctuating. 

In general, you want somewhere with fertile and well-draining soil. Test your soil to do the necessary amendments and improve its structure. The plant also does best with some shade because the full sun affects the foliage’s health. 


Step #2. Planting

After you started Mexican heather in the greenhouse, gently take the plant from the pot. Make sure to untangle and loosen the roots before setting the plant in the center of the hole. Allocate a space of three feet between each plant, and the top of the root ball should be half an inch above the ground. 


Step #3. Maintenance

Maintaining the newly planted Mexican heather plants is no different from other plants. You want to keep soil moisture to help the plants establish themselves. However, be sure not to create a wet environment that can decay the plant. 

Adjust your watering practices according to the weather. Mature Mexican heather plants will tolerate challenging conditions like drought and summer heat. However, it’s best to provide two to six hours of partial shade instead. 



How To Propagate Mexican Heather



You can grow Mexican heather from seeds similarly to other flowering plants. Use pots with standard potting mix for sowing, and then add some soil over the seeds. Maintain soil moisture, and you can place the pots in the greenhouse to protect the seedlings from the environment. 



You can also root cuttings from a healthy Mexican heather plant. Take a four-inch stem section, remove its lower leaves, dip the end in rooting hormone, and then plant in a pot with soil. Continue watering until root establishment for transplanting. 



Division is an excellent way to grow Mexican heather and also keep the plants from overcrowding an area. Gently loosen the soil around a plant to make lifting easier and divide the root ball into sections using a sharp and sterile knife. Depending on its size, you can get up to four divisions for transplanting in containers or onto the garden. 


Caring For Mexican Heather


Water and fertilizer

While Mexican heather can tolerate dry conditions, it would still be optimal to keep them well-hydrated. You can water the plants deeply once per week, but ensure that you’re using a well-draining medium and container. Then, wait for the ground to dry in between waterings to avoid creating standing water. 

Remember to adjust the frequency and amount of water you give to the plants. More so, container Mexican heather plants would dry faster, so water them often. You can also mulch every spring to maintain soil moisture and even smother weeds. 

Do you fertilize Mexican heather? Mexican heather is relatively low-maintenance and not meticulous when it comes to nutrients. However, you can still boost and maintain your plant by fertilizing in spring, summer, and fall with a balanced feed. 



Pruning is not a requirement for Mexican heather. However, you can maintain the size and shape of your plant by trimming lightly every spring. You can also use this practice to remove the unhealthy parts. 


Common problems

As one can expect, Mexican heather plants are not that prone to many diseases and pests. However, you still want to maintain proper cleanliness and diligence to prevent infestation and diseases. It would also be best to maintain a stable environment such as a greenhouse to discourage spider mites or fungal infections. 



You can add another colorful perennial to your garden in three simple steps. Those who know how to grow Mexican heather can quickly tell you that this plant is the easiest to grow. However, remember to plan your planting date and site to ensure that the conditions will support the plant’s development. 

You can start indoors and then plant Mexican heather somewhere with partial shade and fertile, well-draining soil. Ensure soil moisture but never overwater the soil. Once established, you shouldn’t have any issues in growing Mexican heather. 

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