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What are the Planting Zones in the USA and What Do They Mean for Your Indoor Garden?

Image courtesty of https://planthardiness.ars.usda.gov/

Indoor gardening is a very unique hobby. With this practice, you attempt to create conditions indoors that plants normally need to thrive outdoors. Indoor gardening can be simple as keeping a couple of houseplants, or as complex as a large vertical farm. 

While technology has made the practice much more approachable for beginners, people still have a good deal of questions about indoor gardening. Of these, Soltech Solutions has received a number of inquires about outdoor conditions affecting indoor gardens. 

To help our customers feel more confident, Soltech Solutions put together this brief article on planting zones and what they mean for your indoor garden. 

What are Planting Zones? 

Planting zones are regions in the United States and Canada that limit where certain plant species can successfully grow outdoors. Also known as “hardiness zones,” planting zones are separated by temperature intervals of 10 deg F. 

planting zones us
Image courtesy of https://planthardiness.ars.usda.gov/

As temperatures get cooler in different planting zones, these cold temps set thresholds on what types of plant species can survive in a given climate. The concept of planting zones was originally developed by the USDA and is represented in the Plant Hardiness Zone Map

The USDA created 13 planting zones in the United States and Canada – the coolest being Zone 1 and the warmest being Zone 13. 

What Types of Planting Zones are in the USA? 

Planting zones in the USA are dictated by latitude as well as elevation. Looking at the USDA Plant Hardiness Zone Map, you will largely see a pattern where warmer planting zones exist further south. However, mountainous regions such as Colorado present unique variances in climate, as higher elevations drive cooler temperatures. 

Examples of planting zones in the USA: 

Zone 1: coldest zone, minimum temperatures of -60 to -50 deg F. 

  • Location: Alaska, Canada  

Zone 6: average zone, minimum temps of -10 deg F to 0 deg F. 

  • Location: runs through 38 U.S. states across the middle of the country. 

Zone 13: warmest zone, minimum temps of 60 deg F to 70 deg F. 

  • Puerto Rico, Hawaii 

Are Indoor Gardens Affected by Planting Zones? 

The best way to understand whether planting zones will influence your indoor garden is to consider the environmental factors that influence plant growth: temperature, humidity, and sunlight. 

Rather than thinking about large geographic locations, you should focus on creating a stable cultivation environment within your home. Because modern buildings are designed to carefully regulate environmental conditions, they will insulate your plants from the effects of the outdoors. The key is to figure out ideal levels of temperature, humidity, and sunlight for your houseplants –  then keep them consistent throughout the year. 

Photo Courtesy of Hyannis Country Garden

If you opt to grow a photoperiodic plant species indoors, beware that changes in the length of night and day outdoors will have an influence on your garden. However, you can regulate plant growth with a  plant grow light

Should I Be Concerned About Planting Zones for My Indoor Garden? 

Because houseplants share your living space, they are directly influenced by the temperature, humidity, and light levels of your home. If these levels change dramatically between the seasons, planting zones could have an impact on your garden. 

California Region

Certain regions of central California experience hot, dry summers and cool, rainy winters. Known as a “Mediterranean climate,” this part of the country has dramatically different humidity levels between summer and winter.  If you are growing plants that like humidity in this part of California, you will have to supplement with a humidifier during the summer months. 

Aside from a few small exceptions, most indoor gardens are not greatly influenced by the climatic influences of planting zones. As long as you keep your home properly insulated from the environment outside, and maintain a stable climate, your houseplants should do well wherever you live.

Talk to Soltech Solutions Today! 

Soltech Solutions is an industry leader in decorative grow lights. Contact Us today if you have additional questions about indoor gardening.

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A
12/01/2021
Anonymous
CA CA
I recommend this product

Outdoors, we're approaching the darkest days of winter, but my indoor plants are thriving under their Aspect lamp. I've even been able to add to my collection now that I'm no longer confined to the limited selection that would tolerate my home's paltry supply of natural light. Great product!

VH
12/01/2021
valerie H.
US US
I recommend this product

Large Aspect grow light

I purchased the large white pendant grow light during an awesome black Friday deal. I've had my eye on this particular light for awhile, but patiently waited until they were on sale. I purchased one with ease and it was shipped immediately. Because I live close to where these are made, my package arrived pretty quickly. Everything in the box was well organized and the instructions on how to install it were super clear. I will say that my plants are now super happy and are thriving because of the light they are getting. The lighting itself is not too harsh and so I can sit and work on my couch while the light is on during the day. The pendant is simple and yet chic and isn't a distraction from the decor in my house. Thank you all so much for this lovely product and for saving my plants from the darkness of Buffalo, NY :)

A
11/30/2021
Anonymous
CA CA
I recommend this product

Would highly recommend

The design is elegant and my plants are growing well. Shipping and customer service was great.

EJ
11/29/2021
Eileen J.
US US
I recommend this product

Highland system

The product arrived fast. I puchased the system specifically for 3 large citrus trees I purchased this year and moved inside for the winter. They seem to love it. The trees did not drop leaves and are currently flowering. I will be ordering more lights for other areas in my home. I would love some floor lamp models.

Soltech Solutions  Review

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