5 Best Heat Tolerant Arugula Varieties (Slow-Bolting Arugula)

5 Best Heat Tolerant Arugula Varieties (Slow-Bolting Arugula)

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If you are an Arugula fan, then here we will be discussing some of the best Heat Tolerant Arugula Varieties. You know that arugula varieties are already getting such hype being from the category of brassicas group. The arugula plants are also called rockets and have a really good flavor.

Key takeaways:

  • The wild plant varieties have a high ability to survive in harsh conditions irrespective of the delicate appearance they give. 
  • The regular arugula variety will bolt in the summer hot weather when the plant starts to flower stalk and get less leafy as the energy plants are moved to the flowering session.
  • With time the leaves also turn hairy and have a bitter taste, which is not much loved by the people.

You love to add them to salads, we know that! They are just so easy to eat, full of flavor, and look all lush green. I personally love the arugula’s mustard-like flavor that they provide in the salads. But the issue is that arugula plants easily get bloated during the summer heat. The arugula is best grown during the time of early spring or late summer when the temperatures are that high or too low. The wild arugulas are seen to be more resistant to heat than the normal arugula varieties.

In this article, we will give the 5 best heat-tolerant arugula varieties that you can grow.

5 Best Heat Tolerant Arugula Varieties


The Astro arugula plants are among the arugula that is not very spicy. Not everyone can handle good spice. This arugula has mild flavor intensity and moderate heat tolerance. If you plant Astro arugula you have to wait for 35-40 days for them to mature. Astro arugula is also grown by open pollination. The plant is highly rewarding due to its ability to withstand high temperatures. The good thing is that you can harvest the young arugula and use them or can use microgreens for speed harvesting. The ideal time for getting the baby arugula is 21 days. At this time the leaves are not properly lobed. They are famous for microgreens as well.  

To know more about the plant world, you may also read related articles, 10 Must Grow Heat-Tolerant Eggplant Varieties

Red Dragon

The red dragon as the name indicates adds fire to the dishes and gets matured in 45-47 days. Spice lovers love to add them to the salads to make a bit spicier and more flavorful dishes. The leaves are attractive to red dragon arugula. So in short they don’t just look good but also taste good. The leaves are oak leaf-shaped and the plant gets to the height of 5 to 6 inches. They are actually wild varieties that have dark green leaves with deep red-colored veins. 

Slow bolt

The arugula slow bolt is a vegetable green that is hardy and grows in cool temperatures, needing spring soil or spring season to grow tender arugula plants. They are fast-growing and have a better heat tolerance rate. Other than the arugula, slow bolt seeds can be collected and planted at a suitable time. They need 6 weeks to get harvested. The plants are short-sized with 2-3 inches in height. 

Wild arugula 

The wild arugula gets matured 50 days after sowing. They are the wild varieties of arugula having really good heat tolerance. The wild arugula looks a lot like wild plants and weeds. The wild arugula has a strong flavor. They are mostly making pesto pasta and have a good spicy kick. They are hardy and have high heat tolerance. The leaves are highly serrated and plants don’t gain much height. The plant bolts slowly and produces yellow color flowers. The bolting doesn’t much affect this arugula variety. The wild arugula plants don’t get bitter on bolting, their taste remains the same. They are slow growing than the other varieties of arugula. 


Wasabi arugula is another popular variety that is used in salads, sandwiches, toppings, dressings, etc. The wasabi arugula takes 35-40 days to mature. The plant gets to a height of 10-20cm and has a spicy complex flavor. The wasabi has a strong flavor that gives nose-tingling sensations. 

Final words of the context

So in this article, you get to know the best varieties of arugula that have good heat tolerance and taste good as well. You also came to know that it is really important to consider the season in which you are growing arugula. The springtime makes it suitable for the arugula plants not to lose their flavor. It is important that the plants get good moisture and water to keep them cool and going. We hope you like this article and find it useful. We are happy to share and help you guys. Happy planting! 


How hot can arugula tolerate? 

The arugula plants in spite of loving the cooler conditions can also withstand the hot climate. But that lies on some limit, that is the plant will grow unbothered in the temperature until it is 75 degrees Fahrenheit. More than this the arugula plants will find it difficult to grow properly. 

How do you grow arugula slow bolts? 

The arugula plants like full to partial sun, and regular water in a light way so that they don’t get under water stress. The arugula plants get bitter in the hot summer so it’s important that you give light shade during the day to maintain their flavors.

Becky Decker