Updated at: 16-02-2023 - By: Sienna Lewis

When it comes to summer salads, beverages and pickles, nothing beats a chilled cucumber. It’s a lot more fun and tastier to cultivate them in your garden than to buy them from a supermarket, food stand, or farmers market. To learn how to successfully cultivate cucumbers in California, read this comprehensive guide.

Cucumbers may be easy to grow, but there are a few considerations to make to ensure success.

In contrast, California’s warm, dry Mediterranean climate makes it difficult, if not impossible, to grow fully mature cucumbers. Even in the state’s most populous cities, the lack of nutrients and alkalinity in the soil remains a problem.

Choosing the type of garden

To grow Cucumbers in containers in California

It is preferable to use large containers for growing vegetables and fruits in pots. More potting mix in larger pots helps retain water in the container for longer, making it easier for plants to grow. Maintaining a steady supply of moisture is essential for cucumbers. Using a self-watering container is the best option. Cucumber plants should be planted one or two per square foot of potting soil.

Potting mix suited for vegetables should be used to grow cucumbers in pots. Determine if the soil has been fertilized previously. During planting, avoid using fertilizer if this is the case.

Growing Cucumbers in the California Home Garden

To grow Cucumbers in the backyard in California

Pick a location that gets a lot of sunlight. There must be enough of light and warmth in order for cucumbers to thrive. Cucumbers thrive on soil that is well-drained. Plow the soil to a depth of 6 to 8 inches after adding 2 inches of old manure or compost to the bed. Soil moisture is important, but so is a soil environment that is both well-draining and warm. The soil should have a pH between 6.5 and 7.0, which is neutral or slightly acidic. Clay soil can benefit from the addition of organic matter. This can be done by using peat, compost or decomposing manure to rehabilitate heavy soil.

Plant seeds in a row 3 to 5 feet apart and 1 inch deep, depending on the variety. One foot should be the minimum distance between trellis plants. Alternatively, stacks of 2 to 3 seeds each can be sown 1 to 2 feet apart. Reduce the number of plants per mound to one once they have grown to a height of 4 inches. Cover the row with plastic before planting if you live in a colder climate.

In Northern California, when should you grow cucumbers?

In Northern California, the best time to plant cucumber seeds is April. Wait a few weeks before transplanting larger seedlings from a greenhouse to give the plants a head start on the growing season. Although the stems are extremely delicate, they can be easily damaged when transplanted.

In Southern California, when should you grow cucumbers?

It is possible that cucumbers are a little finicky in Southern California, despite the fact that they do well here. Warm, sunny conditions (between 55 and 85 degrees Fahrenheit) are ideal for them. Cucumbers become irritable and sensitive at temperatures between 50°F and 85°F. Cucumber seeds can be planted outside in Southern California starting in April or May and continuing through the summer months of July and August.

In Southern California coastal settings from April or May to July or August, while temperatures are still pleasant for cucumbers, plant pre-germinated cucumber seeds or seed directly outdoors. To endure extreme temperatures, turn to heattolerant varieties.

Do Cucumber plants need a lot of sunlight in California to thrive?

A place in your yard where they will receive at least eight hours of direct sunlight each day is ideal for cucumber plants. Find a site that gives some afternoon shade for your cucumbers, as they can’t handle extreme heat.

Soil temperature for Cucumber plants in California

Soil temperatures between 70 and 95 degrees Fahrenheit are good for growing cucumbers. Soil temperatures must rise to at least 70 degrees Fahrenheit before cucumbers may be planted. It’s possible that planting won’t be possible until two weeks after the last frost has passed in your area, depending on how well-protected the containers are and what material they are constructed of. In some cases, the temperature of a container might vary greatly. Using black plastic pots, for example, is faster than using other materials because they hold heat and get to the right temperature more quickly.

Choose seeds over seedlings

In a container or backyard garden, cucumbers are easy to cultivate from seeds. If you live in a cold climate and want to get a jump on the growing season, you can start seeds indoors. Because cucumber seeds are large, you should only plant them half an inch to an inch and a half deep. The seedlings should be placed under grow lamps after germination in order to ensure appropriate light. When relocating seedlings, be careful. You must first harden your seedlings before you can gradually introduce them to the outside world. Roots of cucumbers should not be disturbed, so take care while putting them in containers that will last for a long time.

Watering and care for Cucumber plants

Make sure to feed and water your cucumber plants frequently, as they are heavy eaters and prefer wet soil. To get your plants off to a healthy start, incorporate at least a couple layers of compost into the soil. Once your plants are established, you should apply compost to the soil on a monthly basis at the very least to keep it healthy and rich in nutrients.

If you live in a dry climate, you’ll need to water your cucumbers more frequently than usual. Moisture can be retained in the soil by laying down a layer of mulch. You’ll also need to remove any weeds that appear on a regular basis so that cucumbers don’t rely on them for water and nutrients..

Mulching for Cucumber plants

Summer mulch for cucumbers is chopped or shredded leaves. Rainfall enters the soil through the leaves, which also protect the soil underneath them from evaporation. They are also a crucial source of nitrogen for the soil. Without sufficient nitrogen, cucumbers cannot photosynthesize and yield tasty fruits.

Once cucumber seedlings are 3 inches tall, use this organic option and keep the leaves at a distance of 3 to 4 inches from the plant’s base to prevent stem infections caused by excessive dampness. Additionally, black plastic and shredded newspaper make suitable mulches for the garden as well.

Fertilizing the soil for growing Cucumbers in California

Nitrogen must be provided throughout the growing and harvesting seasons to ensure that the plants are healthy. Nitrogen is necessary for cucumbers to grow quickly and produce a significant harvest. Using significant amounts of composted manure and nutrient-rich compost to modify soils is recommended. Prepare the soil for cucumber planting by single-digging or double-digging it to a depth of 12 inches or more, removing rocks and other obstructions, and then applying compost or manure that has been composted.

In gardens with fresh, uncultivated, infertile, or compacted soils, plant pre-germinated seeds directly into mounded hills, raised beds, or containers with sufficient area. A mixture of washed sand, topsoil, and up to 20% composted manure and nutrient-rich compost should be used in the beds.

Pests and diseases management of Cucumber

When growing cucumbers in your backyard garden, the most common issues you’ll run into are cucumber beetles and powdery mildew. When seedlings first appear, cucumber beetles can do the greatest damage, so it’s best to start your plants indoors and move them outside once they’ve matured into young plants.

Alternatively, you can purchase young plants from a nearby nursery and then transplant them into your yard. If you want to start your seeds in the ground, use row covers to protect them while they grow. As soon as you observe blossoms, remove the row covers to allow for pollination.

In California, can you grow cucumbers year-round?

Finding a window in California that meets the temperature requirements of cucumbers might be a challenge, if not impossible, in some areas. When it comes to cucumbers, there may not always be a growing season that fulfills the temperature requirements for the fruit in hot summer regions like Southern California. Here’s something you could have missed: Container Gardening For Growing Organic Cucumbers

To get good yields from cucumbers, growers in these conditions need to be meticulous in their variety selection and put in a lot of effort. If their needs are not met, cucumber plants may grow slowly or become stunted, produce little or no fruit, or become vulnerable to pests and diseases.

Growing Cucumbers in summer in California

In the summer, cucumbers thrive in California. Temperatures ranging from 55 to 85 °F are ideal for their survival. Cucumbers become irritable and sensitive at temperatures between 50°F and 85°F. During the months of April to August, cucumber seeds can be planted outside in Southern California.

Guide to Growing Cucumbers in California: In Containers, Backyard, Summer, and Winter

The soil in the container must be moist but not soggy while watering the plants in the summer. Cucumbers require regular and appropriate moisture to grow well. To see if the soil is damp, dig your finger up to the second knuckle into the ground. If the soil is damp at your ngertip, you don’t need to water the container or the soil in your garden.

If the soil is dry, slowly pour water into the container until it overflows the drainage hole. Verify to see if the soil is absorbing any excess water. An extremely dry bed can separate from its container walls and spill water down the sides before it has time to soak up the moisture.

Growing Cucumbers in winter in California

To begin, we need to know how the cold affects the development of cucumbers. Cucumber growth is slowed and even stunted in the winter, according to study, because of the lower temperatures. Chilling injury can occur if cucumber plants are exposed to temperatures below 60F for a lengthy period of time. A temperature of at least 60-70 degrees Fahrenheit is required for cucumbers to thrive.

Cooler than 60 degrees Fahrenheit might cause chilling harm in cucumbers. Cucumbers planted in the late summer should be checked for cold harm. Symptoms such as water-soaked spots, pitting, and plant rot are all indicative of damage. Bitter-resistant cucumbers should be grown in areas where temperatures can fluctuate by 20 degrees or more, so if this is the case, you should plant them.

Two methods to grow Cucumbers in winter in California

Growing Cucumbers in a container

Cucumbers are not able to thrive in areas where the temperature drops below freezing. You’ll keep them outside in a container until the weather cools down. When the temperature begins to drop, transfer them to the inside container. For indoor gardening, each cucumber plant needs a 20-inch-wide by 16-inch-deep container, as well as a wooden trellis to support the growing plant and increase productivity. Salad bush and pickled bush cucumbers are two typical species of cucumbers that thrive in containers.

Growing Cucumbers by using row covers

Cucumbers can benefit later in the season from row coverings, which provide additional insulation and warmth. Depending on the material used, row coverings can boost the ambient temperature for covered cucumbers by up to twenty degrees during the day. They exist in two varieties: greenhouse and tunnel, both of which boost daytime temperatures by increasing airflow. As a result of this difference in fabric, bonded textiles reduce light to plants by 10% compared to clear plastic, while polypropylene retains more radiant heat at night than polyethylene.

Tips For Growing Cucumbers In Southern California

Keep these guidelines in mind if you plan to cultivate cucumbers in Southern California:

Plan carefully

Despite the fact that cucumbers thrive in the region, they can be finicky to cultivate. Temperatures between 55 and 85 degrees Fahrenheit are ideal for their growth.

Temperatures below 50 degrees Fahrenheit and above 85 degrees Fahrenheit tend to make cucumbers more sensitive and stressed. Cucumber seeds can be planted outside in Southern California starting in April or May and continuing through the end of the summer, depending on the season.

Avoid planting into new or uncultivated soil

Cucumbers do not do well on soil that has been disturbed recently or in areas that have been untouched for several years. For a different look, think about growing them in huge pots or raised beds.

Make sure your cucumber plants are placed in regions that receive a lot of sunlight. In order to keep gophers out of your raised beds, you can use a half-inch hardware cloth as a barrier.

Proper plant spacing

To prevent moist leaves and increase air circulation, it is essential to maintain correct plant spacing. There is a lot of concern about leaf mildews for plants in southern California.

Cucumbers do best when planted widely, so if you have the room, go ahead and do that. Drip irrigation, rather than sprinklers, is a good way to water your plants.

Companion Plants For Cucumbers

Companion planting can have a positive impact on your garden. When done correctly, it can help protect crops from hazardous pests, improve soil nutrients, conserve water, and fix nitrogen in the atmosphere. In the vicinity of your cucumbers, you can plant the following:

Jalapeño peppers

In order to minimize space, you can grow vines and bush-type plants together. As a result, cucumbers and peppers make excellent partners.

Both plants are able to thrive in the same environment and even share a bed. Cucumbers and peppers can be placed side by side in a vertical arrangement.

The nitrogen content of the soil can be increased by legumes such as beans, corn, and peas. To convert the plant’s sugar into nitrogen, the legumes’ roots can colonize Rhizobium bacteria and absorb up to 20% of the sugar.

As the plant decomposes, the remaining nitrogen it contains is released into the soil. Adding nitrogen to the soil will have a positive effect on surrounding plants. In addition to cucumbers, beets, onions, and carrots are all good companion plants for cucumbers.


Planting nasturtiums will help keep cucumber-eating insects at bay. You can keep bugs away from your plants by planting marigolds in your garden. Most veggies and herbs benefit from the presence of sunflowers.


Because of its ability to both attract beneficial insects like ladybugs and prevent detrimental ones like aphids and cabbage loopers, dill makes an excellent cucumber companion plant. Insect-repelling oregano is a well-known companion plant.

Cucumbers can be protected from pests by planting these nearby. In addition to chives, catnip, and tansy, there are many other herbs that you can grow.

Plants You Shouldn’t Plant Near Cucumbers

A wide variety of plants can coexist alongside cucumbers. Cucumbers, potatoes, and fragrant herbs should not be planted near any of these three types of plants (except dill).


If you’ve ever grown potatoes before, you know how thirsty they can be. Cucumber quality and size can be affected if potatoes are planted near them in the garden.

Aromatic herbs

Cucumbers and fragrant plants like basil should not be grown together. Your plants’ growth may be stunted if you use sage in your garden.

As a perennial, peppermint and other mints, like spearmint, are easy to grow since they spread out. When growing mint, be cautious to keep it away from cucumbers.


Aside from melons, cucumbers are also a favorite food for harmful insects. Melons can attract insects that can ruin your cucumbers if you put them next each other.

The Benefits Of Growing Cucumbers In A Greenhouse

Even though greenhouses can be expensive, they’re an excellent investment because they’re both affordable and high-quality. Grow cucumbers in a greenhouse to reduce the risk of disease, repel insects and provide a perfect growing environment. Some of the advantages of growing plants in a greenhouse include:

Prevent harmful insects and diseases

Cucumbers can be grown safely in a greenhouse, preventing the spread of disease and pests. Your plants are more vulnerable to injury if you leave them out in the open.


If you wish to cultivate a variety of crops, you may easily customize your greenhouse. You can grow both chilly and warm weather plants at the same time by splitting your greenhouse into two and installing a cooling and heating ventilator. Planting it in your yard would obviously make this impossible.

Create an ideal plant environment

Water and adequate light are all essential for a healthy plant’s development. You won’t be able to produce the harvest you desire if the weather is unfavorable. You’ll be able to create an optimal atmosphere for your plants if you customize your greenhouse.

3 Tips for Growing Cucumbers in Coastal Southern California


The upfront cost of a greenhouse may be high, but it will save you a lot of money in the long term. If you don’t have to deal with pests, you’ll be able to grow a wider variety of crops at a lower cost.

Growing Cucumbers In Southern California Made Easy

Cucumber cultivation in Southern California is made simpler by the availability of appropriate equipment and information. Every gardener can choose a greenhouse from Krostrade that fits their budget and their needs. To obtain a greenhouse built out of sturdy and long-lasting materials, get in touch with us right away.