What fertilizer is good for cucumbers?

Author: Mario Wyman  |  Last update: Wednesday, December 17, 2025

To prep your garden for cucumbers, remove all weeds and loosen the soil with a trowel or shovel. Then incorporate a complete fertilizer such as Pennington UltraGreen All Purpose Plant Food 10-10-10 to provide essential nutrients cucumbers need.

What is the best fertilizer for cucumbers?

A high potassium fertiliser, such as tomato feed or a balanced fertiliser mix including potassium can be used as per the instructions.

Is 10-10-10 a good fertilizer for cucumbers?

Cucumbers perform best in fertile, well-drained soils in full sun. If a soil test has yet to be conducted, apply and incorporate 1 to 2 pounds of all-purpose garden fertilizer, such as 10-10-10, per 100 square feet prior to planting. Cucumbers are a warm-season crop.

What fertilizer should be used on cucumbers and zucchini?

Throughout the growing season, administer potassium-rich fertilizers like kelp meal, wood ashes, or sulfate of potash.

What is the secret to growing good cucumbers?

The best way to maximize cucumber production is to encourage healthy plant growth. Select a spot with 8 hours of direct sunlight and provide fertile soil. Vines that are drought-stressed, fighting off insects or diseases, or lacking nutrients produce fewer cucumbers.

Best Fertilizer For Cucumbers - For the Juicy Cucumbers

Do coffee grounds help cucumbers grow?

Acidic-loving plants such as azaleas, blueberries, hydrangeas, rhododendrons, and roses will benefit from a sprinkling of coffee grounds around the base of plants. Vegetable crops that may benefit from coffee grounds include carrots, cucumbers, peppers, potatoes, and radishes.

Should I water cucumbers every day?

Wire is easy for the tendrils of climbing cucumbers to grab as the plant grows. Cucumbers grow fast and don't demand a lot of care. Just keep the soil consistently moist with an inch of water per week (more if temperatures sizzle and rain is scarce).

Is Miracle-Gro good for cucumbers?

You can also grow cucumbers from seed started indoors, in Miracle-Gro® Starting Potting Mix. You'll want to plant them about 2 to 3 weeks before the last expected frost date. Check the seed packet or stick tag for proper spacing for cucumber plants, usually 3 to 5 feet apart.

What is the best fertilizer for green peppers?

However, the following types are considered best for pepper plants:
  • Compost. Compost is an excellent organic fertilizer for peppers. ...
  • Manure. ...
  • Blood meal. ...
  • Bone meal. ...
  • Fish emulsion. ...
  • Seaweed extract. ...
  • Worm castings. ...
  • Greensand.

How much 10-10-10 fertilizer to use in a vegetable garden?

A common recommendation for vegetables is to apply 1 pound of a 10-10-10 fertilizer or 2 pounds of a 5-10-5 (or 5-10-10) fertilizer per 100 feet of row.

What are good companion plants for cucumbers?

Good cucumber companion plants
  • Borage (Borago officinalis)
  • Dill (Anethum graveolens)
  • Chives (Allium schoenoprasum)
  • Dwarf beans (Phaseolus vulgaris)
  • Peas (Pisum sativum)
  • Sweetcorn (Zea mays)
  • Sunflowers (Helianthus annuus)
  • Nasturtiums (Tropaeolum)

What happens if you over fertilize cucumbers?

Over-fertilizing Cucumber can lead to root burn and even the death of the entire plant in extreme cases. More often, the plant will develop a lot of lush green foliage, but the flowering and fruiting will be reduced. With more leaves, there is also the danger of inviting more pests that feed on your Cucumber.

What feed is best for cucumbers?

When your cucumbers start to flower, feed weekly with a high potash fertiliser, such as a liquid tomato food. Cucumbers bear male and female flowers and in the greenhouse, you will need to remove the male ones, as pollination can make the fruits taste bitter and be full of seed.

What is the best fertilizer for tomatoes?

Some growers prefer to use a high-phosphorus fertilizer, indicated by a larger middle number. You can also keep things simple with a fertilizer especially formulated for tomatoes – usually with a ratio like 3-4-6 or 4-7-10. Most importantly, don't over-fertilize. Too little fertilizer is always better than too much.

What makes cucumbers grow faster?

Cucumbers thrive best at relatively high temperatures, between 75 to 85 °F. The plants do not tolerate frost. Since they are a quick-growing crop, they must be well supplied with moisture and plant nutrients throughout the growing season. Water is especially critical for cucumbers during the fruiting stage.

Can I sprinkle Epsom salt around plants?

For potted plants, Scott recommends applying the Epsom salt solution once per month. When planting a magnesium-loving plant in your garden, such as roses, Scott recommends adding a light sprinkle of Epsom salt to the soil before planting it into the garden.

What is the best fertilizer for cucumbers and squash?

Cucurbits require low nitrogen and high potassium and phosphorous for good fruit development. Add a complete fertilizer such as 4-8-5 or 6-10-10 or similar analysis at a rate of 1 to 2 tablespoons per hill prior to planting. Nitrogen is readily leached from light, sandy soils.

What is one reason not to use Miracle-Gro?

Miracle-Gro has a negative impact on your garden soil. Miracle-Gro destroys beneficial soil life. Miracle-Gro is polluting our water systems. Miracle-Gro actually stresses your plants out and makes them more susceptible to pests and disease.

How do you tell if you are overwatering cucumbers?

Here's how to diagnose if they are getting the right amount of water: Step-by-Step Diagnosis Observe Plant Appearance Leaves: Underwatered: Dry, brittle, and wilted leaves. Overwatered: Yellow, wilted, but soft leaves. Stems: Underwatered: Thin and weak. Overwatered: Swollen and soft.

Do cucumbers need full sun?

Cucumber plants like sun, but are prone to scorching, so some shade is preferable. Encourage greenhouse varieties to climb to boost yields. Harvest fruits early in the day while it's cool. Harvest frequently to get more fruits during the season.

How often should tomatoes be watered?

Water correctly: Do not overwater. The first week tomato plants are in the ground, they need water every day, but back off watering after the first week, slowly weaning the plants down to 1 to 1.5 inches of water per week.

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