When To Plant Carrots In The UK? 3 Bonus Tips!

If you’re thinking about when to plant carrots in the UK, know that Britain’s cool climate makes it easier for gardeners to grow this crunchy veggie. Although carrots grow well in the UK, you still need to know a thing or two about how you can get the most of your harvest.

When to Plant Carrots in Colorado

When Can You Start Planting in the UK?

You need to consider two things before starting a garden in the UK: the climate and the type of vegetables to plant. To know the best time to start growing, you need to know your area’s plant hardiness zone.

The UK has different microclimates and nine types of growing zones. This means that some plants may grow well in some areas and while some don’t. Despite the different zones, the UK generally has a shorter growing season than other warmer and low-altitude countries.

The UK is approximately 3,200 feet above sea level, and every 500 feet higher, the temperature drops 3.5 degrees. Those living at lower elevations enjoy a warmer climate and longer growing seasons. This means that they’ll be able to plant a wide variety of vegetables.

With that said, it’s essential to know your area’s Plant Hardiness Zone. Your garden will be more successful if you plant vegetables, herbs, etc., that grow well in your zone.


Take note of the frost dates

Most vegetables, including carrots, cannot thrive if there’s still frost in the soil. Gardeners and aspiring gardeners should know the first and last frost dates in their area. Simply put, take note of the date when frost stops showing up in spring, as well as the date when it reappears in the autumn.

As mentioned, the dates vary depending on where you live. However, the last frost date in the UK generally falls between May 15th and 30th. On the other hand, the first frost date is around September 15th, but it can arrive early August in elevated areas.

If you have a spring garden, you can plant cold-season vegetables a few weeks or days before the last frost date. However, it would help if you only planted warm-season crops once you’re sure that frost has passed.

There are several online sources for finding the frost dates in your area. It’s essential to take note of those times and read the seed packets before planting your seeds.


What is the Best Month to Plant Carrots?

People classify carrots as a cool-weather crop. This means that you can sow the seed when the soil temperature is 50 degrees F, usually in the early spring. Keep in mind that this varies depending on where you live. For carrots, seed germination usually happens at 55 to 75 degrees F.

It’s best to use a soil thermometer to ensure that the soil’s temperature is accurate. Soil thermometers are inexpensive, and you can purchase one from your local garden store. By using this tool every year, you’ll eventually know when to plant carrots in the UK.

How Early Can You Plant Carrots?

If you’re planning to harvest carrots during summer, it’s best to sow the seeds from three to five weeks before the last frost date in the spring. You can plant new seeds every three weeks until late spring to ensure a plentiful harvest.

You can sow the seeds during mid to late summer or around ten weeks before the first autumn frost if you want to harvest carrots during autumn. If you’re under Zone 3, it’s best to start seeds indoors in mid-June and harvest in mid-September. If you’re under Zone 4, the best time to start seeds indoors is mid-April to harvest at the end of June; or start seeds by mid-July and harvest by the end of September.

If your area falls under Zone 5, you can start seed indoors during the first week of April and harvest on the last week of June, or start seed in the first week of August and harvest by mid-October. On the other hand, if you’re planting carrots in Zone 6, you may begin to seed indoors within the first week of April and harvest on the last week of June; or start seed indoors the first week of August and harvest by the last week of October. Lastly, if you’re in Zone 7, you may begin to seed indoors within the first few weeks of March and harvest mid-June or start seed indoors on the first week of August and harvest the last week of October.


Why Should You Grow Carrots in a Greenhouse?

Growing carrots in a greenhouse can extend your growing season; prevent pests and critters from eating your plants, and protect them from harsh weather.


Extend the growing season

UK weather and late frosts can shorten the growing season by weeks or even months. To extend the growing season, you can start planting seeds indoors and/, or you can plant them in a greenhouse. You can create a microclimate inside your greenhouse, so regardless of the weather outside, your plants can continue to grow.


Prevent pests and critters

Critters and insects pose a threat to your carrots. They can munch on them and destroy your hard work. Deer, rabbits, woodchucks, and gophers are some of the four-legged animals that love to eat carrots. ON the other hand, insects like carrot rust flies and parsley worms can also damage your carrots.


Protect your plants from harsh weather

By keeping them inside a greenhouse, your plants are safe from heavy rains, excessive heat, and cold weather.


Final Thoughts

Now that you know when to plant carrots in the UK, the next step is to look for a greenhouse. Even though greenhouses require a significant investment, the benefits of having one outweigh the price. Get in touch with Krostrade now to purchase high-quality yet affordable greenhouses for any property.



How To Keep Your Hobby Greenhouse From Overheating

How To Keep Your Hobby Polytunnel From Overheating? The Clue!

Food enthusiasts in the UK who own polytunnels in their backyard may ask: “How to keep your hobby polytunnel from overheating?” Now that the summer has finally ended and the autumn has arrived, the after-impact of the sun may still be present. Managing this can be easier said than done, so finding your way is essential. 

Keeping The Polytunnel From Overheating

To keep the polytunnel from overheating, the rule of thumb is proper ventilation. Here are the steps on how you can properly ventilate the polytunnel so it does not overheat.

One of the right ways to conquer heat is to offer plants a good flow of air. Side vents, roof vents, and louvred ventilation, as well as the polytunnel door, should be able to provide you with the necessary movement of the air to cool down your overheated plants.

The area of your roof vent shall offer you the complete change in the air every two minutes. The proportionality of the roof vents is considered a luxury for many polytunnels. Still, they can open up to your doors and side vents, too, enabling the air to move sufficiently.

Remember, temperatures over 27 degrees Celsius can start to cause damage to your plants, so having your thermometer ready will enable you to monitor your situation. In sunny atmospheres, you can proceed as early as you can to open vents and doors, keeping them open on warmer nights. You may also prevent intruders by using nets that allow nothing but pollinators through.

Can A Polytunnel Be Too Hot?

Anything over 32 degrees Celsius may be scorching for the polytunnel already. Even the most demanding crops and vegetables, such as tomatoes that do not do well over this temperature, may find it difficult. 

Thus, it is essential to understand the proper temperature range for the plants since the polytunnel may be too hot and might damage your plants. 

The ideal temperature may likewise vary from a plant to the other. Therefore, it is essential to note the perfect temperature range for the crops since polytunnels too hot may damage the plants and shorten your growing season, thereby decreasing crop production. 

Worry not, because there are more details that you must know about this.

Temperature And Location

Does your location affect the temperature of the polytunnel? Absolutely. People in hotter climates must be extra aware of how hot their polytunnels can get. However, people who own polytunnels in Aberdeen, for instance, may have different situations. Thus, knowing the pointers on how to keep your hobby polytunnel from overheating. 

Monitoring The Polytunnel Temperature

There are tools that you may want to utilise. The temperature sensor must be protected from the sun and lights while they are in the polytunnel. Otherwise, you may get the device to predict the temperature inaccurately. 

To work on the equipment, it must be placed alongside a constant stream of air. To accomplish this, one of the ideal solutions is to ensure the thermocouple located in a box reflective of its colour. 

What Temperature Should I Keep My Polytunnel?

Take note that the ideal temperature within your polytunnel should be a maximum of 29 to 30 degrees Celsius only. Thus, the first lesson when keeping your polytunnel from overheating is to keep its internal temperature stable.

Polytunnels are there to source out the energy from the sun’s rays and heat the air internally, though others may decide to enable heat sources powered by electric and gas heaters. Like automobiles, you can heat the interior of your buildings at up to 100 degrees Fahrenheit on warmer days and regulate temperatures, so you prevent the killing of the plants.

How Do You Keep Your Hobby Polytunnel From Overheating?

First, what is the hobby polytunnel? Let us take a look at the features of the hobby polytunnel with ventilation. Polytunnels of this kind have upgraded vents from your simpler hobby polytunnel, a step toward your professionals and commercial polytunnels.

And, to keep your hobby polytunnel from overheating, there are steps to take a look at. According to data on SF Gate, the way is to monitor the polytunnel temperature and keep the polytunnel cooled down. 

There are quick and cost-effective ways to shade paints and filter out the strength of the sunlight. Bring in additional layers as the summer develops before brushing off these as they cool back down. Shade paint for suitability for the polytunnels, for example, those with timber not painted, is where the blinds and the netting will originate.

Moreover, among the best ways to conquer heat in the polytunnel is to offer plants with good-natured flowing air. One of the ideal ways to take it further is to utilise ventilation, side vents, or roof vents, with the polytunnel doors creating the movement of air that can cool down your overheated plants and crops.


How to keep your hobby polytunnel from overheating involves following specific steps. It takes time and commitment to the UK garden right and produces the crops you are looking for. Happy gardening!

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