Beating the Heat: Protect Plants From Heat Stress

watch, Garden_tool,

Hot weather can be hard on your plants. Just like us, they need special care in extreme heat. Even with adequate watering and mulching, plants can suffer when the temperatures rise but there are a few things you can do to help protect plants from heat stress during the hottest part of the summer.Protect Your Garden From Summer Heat Stress

Water Correctly to Prevent Heat Stress in Plants

To keep your plants cool in hot weather, you must ensure they don?t get too thirsty. Watering is essential when it?s hot, but watering correctly is far more important.

Watering in the morning or early evening is the best for your garden. Giving them water midday is inefficient and most of it will evaporate before it gets to the roots.

Strive for a deep watering two or three times a week. Using a drip irrigation system or a soaker hose will ensure a deep watering. If you do not have an irrigation system, an overhead sprinkler or hand watering will work, just do it in the cool hours of the morning or early evening.

watering a <a href=garden winds tiverton series 3 gazebo replacement canopy riplock 350_700048 to keep plants cool" data-lazy-srcset="// 650w, 413w, 400w, 600w" data-lazy-sizes="(max-width: 650px) 100vw, 650px" data-jpibfi-post-excerpt="" data-jpibfi-post-url="" data-jpibfi-post-title="Beating the Heat: Protect Plants From Heat Stress" data-jpibfi-src="//" data-lazy-src="//" width="100%">


Don?t Overwater

Too much water can cause damage to your plants as much as under watering can. Heat and sun exposure will cause leaf wilt, occurring because of transpiration, or when a plant releases moisture to protect itself in excessive heat. The leaves are wilting so there is less surface area for sun exposure.

?But,? you say, ?they look so thirsty!?? Resist the temptation to water and feel the soil for moisture first. Overwatering can lead to root rot or fungal diseases (when a plant is continuously overwatered, it can deprive the roots of oxygen and promote the growth of fungi in the soil). Don?t worry, your plants will bounce back when the sun goes down.

Add Mulch

To protect plants from heat, consider adding mulch. A thick layer of mulch helps insulate the plant?s roots from both heat and cold. It will also help keep the soil moist.

If your garden is prone to extreme temperatures, strive for at least 4-6 inches of mulch in your garden. Straw, pine needles, leaves, and grass clippings make good, inexpensive mulch. Lay it on thick; your plants will love you for it.

fallen leaves on the ground

Prevent Sunburns

During extreme heat, plants will cease flowering and can get sunburned. When temperatures get into the mid 90?s Fahrenheit, plants like , , and eggplants hold back flowering.

The leaves of a sun-damaged plant turn white. It can be the only sign of sunburn and is the most prominent one. When in a greenhouse, the leaves receive plenty of filtered light. After they leave a greenhouse and are exposed to full sun, the plants often aren?t ready to handle the extra UV rays.

To avoid sunburns, slowly let the plant harden off. This means giving it some sunlight, but not full sun, before you plant it in your garden. Slowly give it more sun exposure until the plant has toughened up. Just like us, we must build a base tan or risk getting a sunburn.Peonies in the sun



Utilize Plant Shade Covers

Once your plant has a sunburn, the best thing you can do is get it some shade so it can recuperate and grow new leaves.  Adding shade for plants during the hottest part of the day will prevent any burns and wilting plants.

Patio Umbrella

For a small area, consider a . Put the umbrella up during the hot afternoon sun so your plant doesn?t get the intense UV rays, but still receives the nice morning and late afternoon sun.

Beautiful garden patio with umbrella and potted plants

Shade Sail

Much like an umbrella, you can use to keep both yourself and your plants protected from the sun. This works great if you have an area in between a house, tree, or shed to drape the shade sail between.

Shade Cloth

creates excellent sun protection for plants. Most of the fabric is light enough that it can be draped directly over plants. For plants that may be a little more delicate, such as tomatoes, you can use support hoops to keep the fabric off of the plants.

Bed Sheet

Another easy plant shade cover, use a to drape over a trellis to create a shady section of your garden. Any lightweight fabric will do, but I find that everyone has a spare bedsheet they can use for this.

Feel free to plant around your plants if you have no way to drape the fabric securely over the plants. Make sure the sheet hovers a few inches above the plant so as not to damage it.

Window Screens

If you?re feeling exceptionally crafty and want something a little more permanent, consider using fabric and a plastic or steel frame to create an open greenhouse with shade for plants instead.container plant with foliage


Protect Potted Plants

To protect potted plants from heat, you can use many of the same plant shade covers as you would in your garden. While garden plants must stay put, many containers have the ability to be moved. Place them under a porch or in full shade if possible on exceptionally hot summer days.

Containers tend to dry out faster and will need more frequent watering than your garden plants. Check your potted plants and hanging baskets every morning to ensure they aren?t dry.

Choose Heat-Tolerant Plants

Many plants out there love the sun and thrive in the intense heat of summer?s peak. For more information and a list of plants that will stay happy and vibrant throughout summer, head on over to this post about

lavender plants in a garden

Take Care of Yourself

Most importantly, make sure you are taking the right safety precautions when out gardening in the heat. Skip the hottest part of the day when doing garden chores and instead head out to the garden in the morning and evening. Work in shorter increments and take regular breaks. Gardening in the summer at a much slower pace; listen to your body if you need to take a break and avoid heat stress.

Apply sunscreen, , and wear a hat. Like your plants, be sure to stay hydrated. Sweating will help cool your body down, but you need to keep your body replenished. Water is best for hydration, but you can also quench your thirst with a cool glass of or !

lavender syrup soda

While the heat of the summer can sure take its toll on us and our gardens, following these tips on how to protect plants from heat will make the summer that much more enjoyable. The plants will be happy and you won?t have to worry about them! Cooler days will be here before you know it, so enjoy the warm weather while it lasts.

More Posts About Summer:

Share this post:

Heat lovers rejoice, it?s time to get spicy! Growing peppers in your garden is a unique way to enjoy the love of spice. With so many varieties available, you can have your very own unique pepper garden. Whether you prefer your peppers sweet or spicy, there?s a pepper for everyone! This guide on how to grow peppers explores the different varieties, tips on how to grow them from seed or transplant, how to harvest them, and how to use them to make your very own garden pepper hot sauce!

collage showing how to grow peppers

In early summer each year I wait with anticipation for my trial plants to arrive. What are trial plants, you ask? They are the sneak peek of the new releases in plants for the upcoming year, that plants companies send out to gardeners to test in their gardens.

measuring home grown peppers

I?m grateful to be on the list for plants from Ball Horticulture, which means I get a box or two of ready to plant vegetables from Burpee Plants, , , Darwin Perennials, and more. At the end of the season, the trialers send feedback on the plants to Ball and they use that to help send the plants out the following year with the best chance for success in home gardens.

Burpee Homegrown Peppers

Some of my gardening friends also plant trial plants. My dear friend , co-owner of and author of and , grew the same peppers this year so I asked her to share her experiences growing them. How fun, right?

As a result, this growing guide is a combination of my tips growing peppers in my zone 7B Vancouver, BC, garden and Tara?s helpful advice from sunny SW Ontario.

The Difference Between Hot Peppers vs Sweet Peppers

Botanically speaking, there is no difference between a hot or sweet pepper as both are derived from the species of plant Capsicum in the tomato family. However, our taste buds would disagree. There is certainly a noticeable change when it comes to hot or sweet pepper varieties.

Capsaicin + the Scoville Unit

So what makes certain peppers taste hot? Capsaicin!

Capsaicin is an irritant alkaloid and is what gives hot peppers their spice. The hotter the pepper, the more capsaicin it has in it. In addition, the Scoville scale is used to determine how hot a pepper is. The more Scoville units, the higher the heat.

To give you some perspective, a bell pepper has zero Scoville units and a jalapeno ranges between 2500 ? 8000. The hottest pepper in the world, the Carolina reaper, has 2.2 million Scoville units. Yikes!

How to Use Hot Peppers

Hot peppers are used in cooking to add zest and heat to recipes. They can be used fresh or dried, both being potent. Hot pepper spices include chili, tobacco, paprika, and cayenne pepper. They can be red or green depending on the variety. You can also pickle a hot pepper if you wish!

How to Use Sweet Peppers

Sweet peppers are more often classified as a vegetable. They are used in dishes like salads, for dipping, as an hors d?oeuvre, in sandwiches, on pizzas, and more. They are enjoyed raw or cooked. The most well-known sweet peppers are bell and banana, but there are plenty of specialty peppers out there for the at-home chef to use.

visualization of how to grow peppers as a seed sprouts from the soil

How to Grow Peppers from Seed

Growing peppers from seed requires some patience, but overall, it is fairly simple. Here are some things to keep in mind:

1. Know Your Zone

Only people who live in the deep southern regions should attempt to plant seeds straight in the ground. For most of us folks, we must sow them indoors for 8-10 weeks before planting them in the garden or outdoor container. Depending on where you live, plant them in the ground 2-3 weeks after the last frost.

2. Soak in Water Overnight

Before you plant your seeds, soak them in water overnight. Once soaked, place them into the soil of your choice. You can use pellets or try your own . Plant three seeds per pod to give you better chances of a sprout in a hole that is 1/4? deep.

3. Germinate

Most sprouts should take about a week to germinate at a temperature between 70-80 degrees F, but it can be spotty based on the variety. Hot peppers tend to be more finicky. If you are trying to germinate a hot pepper seed, they will need more warmth and moisture than a sweet pepper. Spritz the soil and consider placing your seeds on top of somewhere warm like a heating mat or even on top of the refrigerator. I also suggest using a greenhouse dome to lock in the moisture.

4. Transplant

Once you have a sprout, remove the plants from the dome and heating mat. Put the pepper in a sunny, southern-facing window until you transplant them. Allow your peppers to sit outside for a couple days to condition them to their new outdoor environment.

Burpee Home Gardens Herbs

How to Grow Peppers from Transplant

Peppers can take a while to establish and ripen, so starting peppers from healthy transplants is a surefire way to success.

?The plants I received from Burpee were very well-established when I planted them. Because of the hot, sunny weather, all my plants thrived despite the heat, and were all laden with peppers. I was able to enjoy multiple harvests.? reported Tara.

My transplants arrived in the same fabulous condition, but our summer was much cooler than Ontario, so when Tara?s peppers were red and ready to pick, mine were still happily green and taking their time.

If you want the best chance for beautifully ripe peppers, get those healthy transplants in the ground no more than 2-3 weeks after your last frost.

Plant peppers in full sun in a sandy loam soil that has lots of organic matter and drains well. I also added worm castings from my worm bin to the planting hole of each pepper. Depending on the size of the pepper and your gardens spacing, they should be planted 12-18 inches apart, with row spacing of 3 inches. Your peppers will respond well to dense planting!

When planting, be sure to soak both the plants and soil with fertilizer drench. After about 30 days, you may want to fertilize them again with a light sprinkling. Be careful not to over apply nitrogen when using your fertilizer as this will just make them leafy.

Peppers can also act as ornamentals, so feel free to plant them in flowerbeds and along borders.

Sweet peppers will take approximately 60-90 days to fully mature while hot peppers will take around 150 days.

Burlap Pepper Planter Bag

Growing Tips for Perfect Peppers

There are a few things you can do to give your peppers a leg-up in the garden. Here are some quick tips!

Water Correctly

Peppers are thirsty little plants. When watering, use a soaker on the roots and try to keep foliage dry. When it is hot out, the soil must have a high moisture level but it can?t be water-logged. This will help to fight against wilting and flower drops.

Tara reported back, ?Because our summer was very hot and dry, I gave the plants a deep watering every morning.?

Use Mulch to Retain Moisture

Mulch can also help to retain moisture. I mulch around each of the peppers with compost. It will also help to keep the weed population down and decrease the need to pull weeds from around the plant. Disturbance to the roots of your pepper plant with affect the production of peppers.


Like tomatoes, peppers can get heavy and damaged when they have a lot of fruit. Peppers usually will require staking. Tie the plant to stakes with fabric or old nylons which have some give to allow room for growth. Twine or twist-ties will choke the stems.

Keep Peppers Warm

For those who live up north, we want our soil to be as warm as possible for our peppers. A week before planting, cover the bed with cardboard to help to warm up the soil underneath.

Proper Companion Planting

If you do companion planting, peppers do well next to tomatoes, parsley, basil, and carrots. Avoid placing peppers near fennel and kohlrabi.

Woman with hat harvesting red peppers from the top section of a vertical garden bed.

Pepper Harvesting Tips

  • Never let your peppers stop growing! If it stops growing, it will affect the production of flower buds. If flower buds drop off, you lose a potential pepper.
  • Plan the timing of harvesting carefully. Peppers tend to be harvested before they are mature. However, their flavour doesn?t reach its full potential until maturity. If you pick peppers before they mature, your pepper will produce more peppers in order to try and seed.
  • Plant at least two of the same pepper. Patiently waiting for peppers to fully ripen means you will get less peppers and have to wait until late in the season to have any. I suggest planting two of the same pepper variety. Use one to fully ripen and have the best flavour possible, and use the other to harvest throughout the season.
  • Be careful with the heat! Finally, if you have a really hot pepper variety, use gloves when harvesting peppers. The capsaicin oil from the peppers can actually burn your skin.
preparing jalapenos on board

How to Increase the Heat of Peppers

While variety is of course the main factor when it comes to a pepper?s heat, you can do a few things to increase the heat of your peppers. Hot climates tend to grow the hottest peppers because the environment plays a factor in the heat of a pepper. I have no doubt that Tara?s peppers were much hotter than mine this year!

To get hotter peppers you want the plant to experience more heat. The more sun a pepper will receive, the hotter the pepper will be. The same can be said for the soil. Well-watered and nitrogen-rich soil won?t be as hot. This is why you want to be careful and not soak your peppers (though keep them moist) and not over-fertilize them either.

In colder climates, it is often easier to grow peppers in containers. Grow your peppers in a dark container to maximize the heat of the soil. Growing hot peppers in the garden will significantly reduce the intensity due to the cold nature of soil.

You can also create heat using an .

Mini Greenhouse ripening peppers

Why are My Peppers Turning Black?

Do not fret if your peppers are turning black. In fact, this means you?re doing something right! Many pepper varieties will turn black before they change to another colour. This is part of their ripening process and is totally normal.

If the pepper looks healthy besides its colour, this is the case. However, if you see any shriveling or rotting, there may be other factors at play such as fungal infections or root rot.

Burpee Jalapeno Sweet Poppers growing in the ground

What Peppers Should I Grow?

There are a TON of pepper varieties out there and the choices sure can be overwhelming. The first thing to determine is what kind of peppers you are looking to grow (hot or sweet) and whether or not you have the right conditions for said peppers.

This year, I grew four different varieties from Burpee Plants in my unique and my VegePod Raised Bed. These plants are available at retailers that carry Burpee Plants. Keep an eye out for them in a garden centre near you!

Ristra Cayenne II Hot Pepper

Burpee Ristra-cayenne II

The first variety I have is the Ristra Cayenne II Hot Pepper. This is a little different than their original Ristra Cayenne as it produces more canopy and offers a higher potential for yields.

It offers more peppers per plant and has a mild, spicy flavour. It is great for those who don?t want anything too hot but still want a little bit of spice in their life. My kiddo loves the look of these long and twisty peppers, but stays far away from them knowing they have a bit of a kick.

  • Height: 20-24 inches
  • Spread: 18-22 inches
  • Days to harvest: 75-90
  • Fruit colour: green to red
  • Heat level: ??

Sriracha Hot Pepper

Burpee sriracha-peppers

The next variety is the Sriracha Hot Pepper. Used to make the famous condiment, this slightly spicy pepper is super popular right now?and rightfully so! It is a dark, green pepper with smooth skin that scores around 2,300-2,500 Scovilles.

  • Height: 18-22 inches
  • Spread: 18-20 inches
  • Days to harvest: 80-95
  • Fruit colour: green to red
  • Heat level: ??

Basket of Fire Hot Peppers

Burpee basket of fire ripe peppers

To satisfy my need for ornamental edibles, I?m giving Basket of Fire Hot Peppers a go this year. As the name suggests, they are a very spicy, compact pepper. They look like typical ornamental peppers, but they are edible! They stand up well to colder weather too which is good for me up north.

  • Height: 12 inches
  • Spread: 24 inches
  • Days to harvest: 90-95
  • Fruit colour: multi
  • Heat level: ????

Jalapeno Sweet Poppers Sweet Pepper

Burpee Jalapeno Sweet Poppers

My kid-friendly pepper this year is the Jalapeno Sweet Poppers Sweet Pepper. It actually isn?t spicy at all like some of its other jalapeno counterparts. It allows you to get the flavour without any of the heat! This plant also is early to fruit and produces a high yield when in nutrient-rich soil.

I made these ones into bacon-wrapped jalapeno poppers (with cream cheese and cheddar) and as it turns out, Tara made them too (although she used goat?s cheese). I wish we could have a taste test!

  • Height: 35-40 inches
  • Spread: 20 to 24 inches
  • Days to harvest: 60-85
  • Fruit colour: green to red
  • Heat level: none
Bacon Wrapped Jalepeno Peppers

Where to Plant These Peppers

Tara grew these varieties as well and here is what she had to say about them: ?I planted the Ristra Cayenne II Hot Pepper, Sriracha Hot Pepper and Jalapeno Sweet Poppers Sweet Pepper in my raised bed with benches. This became my ?pepper bed,? as I planted a couple of other varieties, as well. They were also so sturdy my cucamelons used the plants as a trellis as their tendrils escaped the actual obelisk I had placed around them.

Basket of Fire was planted in my small live edge raised bed that?s in my new book , and it wasn?t long before it was absolutely covered in blooms, and soon after that, peppers. The peppers started out as a pale yellow, gradually changing to orange and then bright fire engine red. Basket of Fire is so decorative, I?m going to plant it in my fall container. ?

Make a Garden Pepper Hot Sauce

Garden pepper hot sauce

This is a great way to use your homegrown peppers! I usually make this every year and it tastes completely different each time! Depending on what peppers you use, the recipe will have its very own flavour, unique to your peppers. It is a fun way to preserve the unique flavour of the peppers you have grown.

This recipe is inspired from

5 from 1 vote

Garden Pepper Hot Sauce

Take your peppers from garden to plate. This hot sauce is the perfect condiment to preserve the heat of your garden's chilies.
Total Time 7 d


  • Food processor
  • Blender
  • Cheesecloth
  • Glass container


  • 1 1/4 lbs garden peppers
  • 6 cloves of garlic
  • 1 1/2 tbsp coarse kosher salt
  • 1/2 cup water
  • 1/2 cup


  • In a food processor, combine your peppers, garlic, salt, and water. Combine until you have a similar texture to chunky salsa.
  • Place your mixture into a dry glass container with a cheesecloth overnight. Let is sit for 24 hours at room temperature.
  • Add apple cider vinegar to your mixture and let sit with the cheesecloth for 5-7 days. The longer the better!
  • After the full week has passed, blend your mixture until completely smooth. Pour your mixture through a cheesecloth to get out any seeds and such. Squeeze the cheesecloth with gloves to get out all the juices.
  • Place your hot sauce in your container of choice and store in the fridge. It should last around several months. Shake before use as separation is normal.

About Burpee Plants

You?ll find , a collection of the leading garden vegetables, herbs and flowers available at your favorite local garden retailer. Burpee was created to make gardening easy by giving you the best choices for your gardening lifestyle, both indoors and outdoors. All Burpee Plants are trialed and selected to ensure your gardening success, whether an expert or novice gardener. Burpee also helps take the guesswork out of starting your own vegetable or flower garden with helpful gardening tips and fresh-food recipes.

Share this post:

2be2f8, 55798b, 8c611e, 9702b1, be666d, d7e488, happy pets blog, yourhotcar, Rest Cage, Tents, fitnessfer, sitemap

Leave a Reply

Your email address will not be published.Required fields are marked *