How Fast Does Cucumber Grow?

Cucumbers are an easy-to-grow summer season crop. You probably have a sunny location and a plot of fertile soil, you may develop your personal cucumber plant. Even with no backyard, you may develop a compact cucumber plant in a container! However what development phases does a cucumber plant cross by way of from seed till fruiting?

Cucumbers (Cucumis sativus) are well-liked backyard crops which can be broadly cultivated. The various cultivars of cucumber may be divided into three major varieties: pickling, slicing, and seedless.

Pickling cucumbers are very small and dense, the slicing cucumbers are stoutly rectangular and have distinguished however edible seeds, and the “seedless” varieties are longer with tiny seeds. However not all cucumbers are rectangular and inexperienced; “lemon cucumbers” are rounded and yellow!

Cucumbers are a favourite for snacks, salads, smoothies, and even cool summer season soups. They’re stuffed with water and style fairly refreshing on a scorching summer season day. And since cucumber is a warm-season crop that loves warmth and solar, this is a wonderful mixture.

In the event you’re able to develop your personal cucumber crops, learn on, and we’ll dig proper into the expansion phases of cucumbers and what you may anticipate throughout every stage.

9 Progress Phases of Cucumber Crops

Stage Key Notes
Deciding on Seeds – Flattened, rectangular, off-white
– Use seeds not more than 5 years previous
– Select from many attention-grabbing varieties
Sowing Seeds – Sow seeds outside in late spring or early summer season
– Sow seeds indoors, 3 weeks earlier than transplanting
– Sow in free, moist soil
– Plant 1-inch deep
– Hold seeds heat and moist
Germination – Roots sprout
– Hold heat and moist
– Seeds take 3-10 days to germinate
Cotyledons – First leaves emerge
– New plant requires brilliant mild
– Cotyledons seem after germination and final for about 14 days
True Leaves – First true leaves emerge
– Cotyledons will fall off
– Plant begins rising quickly
– True leaves emerge 7-14 days after cotyledons
– Skinny seedlings
– Transplant indoor-grown seedlings
Vegetative development – The plant focuses all its power on rising longer and bigger
– Requires brilliant daylight and common soil moisture
– Look ahead to pests and illnesses
– Fast vegetative development from the emergence of first true leaves till first frost
Flowering – Vibrant yellow flowers seem
– Separate female and male flowers
– Flowers require cross-pollination
– Flowers entice many insect pollinators
– Flowers start to seem 40 to 55 days after planting
– Wholesome crops flower till first frost
Fruiting – Fruits kind with feminine flowers
– Fruits develop shortly
– Fruits mature 10 to 12 days after flowering
– Look ahead to pests
Harvest – Harvest 3 to 8-inch-long fruits
– Start harvesting 50 to 70 days after planting
– Use a pointy knife or pruners to chop fruits from vine
– Retailer fruits within the fridge for 7 to 10 days
– Take pleasure in recent, cool, crunchy cukes!

In the event you begin a cucumber plant from seed, you may anticipate to reap your first fruit anyplace from 50 to 70 days after planting. In the event you purchase a younger cucumber plant from a backyard middle, you might see your first fruits in as little as 20 days after planting, relying on the age of the plant you bought. So long as the plant stays wholesome, you may have a gradual provide of cucumbers for the remainder of the rising season.

Let’s take a better take a look at every stage and discover ways to make every stage a hit, from choosing seeds to harvesting your crop.

Seed Choice

Deciding on cucumber seeds gives a spread of enjoyable choices, together with completely different shapes, sizes, and development habits.

You possibly can have a variety of enjoyable choosing cucumber seeds. Attempt one thing new and completely different that you simply’ve by no means tried earlier than. There are conventional rectangular inexperienced cucumbers, or “lemon” cucumbers which can be small, spherical, and yellow! You possibly can develop miniature cucumbers for pickling or extra-long cucumbers, that are surprisingly candy and glorious in salads.

Additionally, you will have a alternative in development habits. Most cucumbers are vining and can develop as much as 6-foot-long vines. These vines develop very well on a trellis or different upright assist. If you wish to stick with one thing extra compact, attempt a bush number of cucumber. These crops keep simply 1 or 2 ft lengthy and are nice for containers, raised beds, or different small areas.

Cucumber seeds which were saved in a cool and dry location can keep viable for as much as 5 years. The germination charges will decline over time. You probably have seeds over 5 years previous, beginning with some recent seeds could also be worthwhile. Additionally, should you discover your seeds are smooth, mushy, brown, or moldy, throw them out and purchase some new seeds.

Cucumber seeds are available at nurseries and backyard facilities or anyplace else that sells backyard provides within the spring. Any on-line seed catalog ought to have cucumber seeds as properly. In the event you simply wish to develop a couple of cucumber crops, any seed pack could have greater than sufficient seeds to get you began.

Sowing Seeds

Cucumber seeds may be sown indoors or outside. You probably have a heat and sunny window or develop mild, you may plant seeds indoors to get a head begin on the rising season.

Cucumbers additionally develop properly when immediately sown within the backyard however are very delicate to chilly temperatures. Simply wait till the out of doors temperatures have warmed sufficient that the soil is round 70 levels and that crops won’t threat frost or temperatures lower than 45 levels.

Beginning Seeds Indoors

Close-up of planting cucumber seeds in a starter peat tray. The starter tray will have deep square cells filled with potting mix. Each cell contains one seed. Seeds are small, oval, flat, white-beige. The garden shovel lies on top of the starter tray.
To start out cucumber seeds indoors, use a sunny location, plant 2-3 seeds per pot, and preserve them moist.

To start out seeds indoors, you will want a sunny location or develop mild. Cucumber seeds want heat, and a seed-starting warmth mat is an effective way to provide them a lift.

In the event you don’t have a warmth mat, that’s wonderful too. Place them in a sunny window or one other brilliant, protected location the place you may control them. The perfect seed-starting temperature for cucumbers is round 70°F.

Plan to begin your seeds indoors about three weeks earlier than you wish to plant them exterior, which most likely means beginning them inside in mid to late spring. Put together your pots with recent seed-starting soil. Plant 2 or 3 seeds per pot, pushing them 1 inch deep into the soil. Hold the seeds heat and moist till they sprout.

Beginning Seeds Open air

Close-up of female hands planting cucumber seeds into the soil in the garden. Cucumber seeds are small, flat, oval, pale beige.
For profitable out of doors cucumber planting, guarantee a sunny location with 6 to eight hours of brilliant daylight each day.

Cucumber seeds do wonderful when began exterior, immediately sown within the backyard. Earlier than planting any seeds, nevertheless, put together your soil prematurely to provide your crops an amazing begin.

The perfect cucumber location has full solar with a minimum of 6 to eight hours of brilliant daylight every day. Cucumbers want wealthy, well-drained soil with a pH of 6.0 to 7.0.

Domesticate your soil to roughly 8 inches deep earlier than planting. In case your soil is dense, stuffed with clay, or extraordinarily sandy, you may enhance soil high quality by including some compost or well-aged manure and totally mixing it in earlier than planting.

Cucumbers additionally want loads of heat. Don’t begin them exterior too early, or your crops will endure. Begin the seeds exterior a minimum of 2 weeks after the final frost date when the soil temperature has warmed to a minimum of 70 levels. Cucumbers are delicate to chilly and can die in a frost, so shield the seedlings throughout their early days and attempt to preserve them heat.

Plant the seeds 1 inch deep and preserve them preserve heat and moist till they germinate.

In the event you plan to develop crops on a trellis, area a cluster of two or 3 seeds each 1 foot alongside the trellis.

For rising in hills, create a mound of soil roughly 1.5 ft throughout. Area the mounds roughly 2 ft aside. Plant a cluster of two to three seeds per mound; you’ll skinny them later.

Area the rows 5 to six ft aside in order that crops could have loads of room to sprawl alongside the bottom, and you should have area to stroll between them. Sow seeds each 4 to six inches alongside the rows. You’ll skinny them later.


Close-up of a sprouted cucumber seed. The sprout has a short, thin, slightly hairy stem and oval closed green leaves.
Cucumber seeds usually germinate in heat, moist soil inside 3 to 10 days.

Viable cucumber seeds in heat, moist soil can require between 3 and 10 days to germinate. The perfect temperature to stimulate germination is round 70 levels or a little bit hotter.

If the temperature is simply too cool, your seeds might take longer than 10 days. Hold the seeds heat and moist all the time you might be ready for them to germinate.

Throughout germination, the exhausting outer layer of the seed, often known as the seed coat, softens and cracks open. A tiny root emerges and begins to develop down into the soil.

You most likely gained’t see this stage as a result of the seed will nonetheless be utterly underground. As soon as the basis grows down a little bit bit, a tiny inexperienced sprout will seem above the soil floor. That is the primary signal you will notice that your seed has efficiently germinated.


Close-up of the cotyledons of cucumber sprouts. The sprouts are small, have short thin stems and a pair of blue-green cotyledons. Cotyledons are small, oval, oblong leaves with smooth edges and surfaces.
The primary two oval-shaped leaves of a cucumber plant are referred to as cotyledons.

You’ve been ready patiently, and your seeds are nonetheless heat and moist. One morning, you discover that one thing has lastly occurred! A tiny inexperienced sprout has emerged from the soil.

This little sprout begins as a skinny, weak stem with two tiny, furled leaves. In a couple of days, the stem has straightened, and the 2 little oval-shaped leaves unfold aside.

These first two leaves you see are referred to as cotyledons. The cotyledons of a cucumber plant are brilliant inexperienced and oval-shaped. They are going to seem in a pair reverse one another. You’ll most likely discover that they don’t seem to be the identical form because the true leaves of the cucumber plant. The primary true leaf will emerge subsequent. You possibly can anticipate the cotyledons to final roughly two weeks.

True Leaves

Close-up of a young cucumber seedling in a sunny garden. The plant has two Cotyledons and two True Leaves. Cotyledons are small oval, elongated, smooth, dark green leaves. True Leaves are rounded, dark green leaves with ragged, serrated edges and a rough texture.
The primary true leaf usually seems 14 days after the cotyledons, being rough-edged and extra rounded.

The primary true leaf will emerge anyplace from 10 to 14 days after you see the cotyledons. Whereas the cotyledons are clean and oval-shaped, the primary true leaf might be barely rough-edged and extra rounded in kind. After a couple of true leaves develop and the plant begins to develop quickly, the cotyledons will flip yellow and drop off.

When the seedlings have grown a few true leaves and are round 4 in tall, it’s time to skinny them. Fairly than pulling them out, which might disturb the roots of any shut neighbors, take away the additional seedlings by snipping the additional crops’ stems with sharp scissors.

In the event you began seeds inside – Skinny the seedlings to 1 wholesome plant per pot.

In the event you began seeds exterior – You’ll need to skinny the seedlings, however the spacing of your seedlings will rely in your rising strategies.

Transplanting younger crops – In the event you began seedlings inside or purchased younger crops from the native backyard middle, you may comply with these identical spacing tips as you transplant the seedlings into your backyard.

In the event you develop your cucumbers on a trellis, skinny them to 1 plant per foot. Place the trellis instantly subsequent to the plant in order that because it begins to develop upwards, it’ll quickly contact the trellis. Cucumbers will naturally climb on any close by assist construction.

In the event you plant your cucumbers in mounds or hills, skinny them to 1 plant per mound.

The rows ought to be spaced 5 to six ft aside to permit for the vines to develop and so that you can stroll between them. For rows of crops, skinny seedlings to 1 plant per 1.5 to 2 ft alongside the row.

Earlier than you transplant your indoor-grown crops into the backyard, harden them off for every week or so. All this implies is that every single day, place the seedlings exterior in a considerably protected space the place they are going to be uncovered to a restricted quantity of direct daylight and pure out of doors temperatures.

Take them in every night time. This enables the younger, tender crops a while to acclimate to out of doors extremes earlier than transplanting them into the backyard.

Vegetative Progress

Close-up of growing young cucumber plants in a sunny garden. The plant has short, slightly hairy stems with round, dark green, slightly lobed leaves with serrated edges and a rough texture.
Cucumbers develop quick and profit from mulching, trellising, and constant moisture.

Cucumbers develop quick. As soon as your crops sprout and begin to develop their true leaves, they’ll develop quickly. Mulch across the younger crops to assist preserve the cucumber fruits clear and assist supply some safety in opposition to soil-dwelling pests like slugs.

In the event you haven’t already put in a trellis to your vines to develop up, it’s not too late. Cucumbers are climbing vines and can attain for any type of fence or framework to develop on.

Permitting your crops to climb is a method to apply vertical gardening and is a wonderful method to save area! Trellises additionally supply different advantages, equivalent to enhancing airflow, enhancing pollinators’ entry, and permitting you simpler entry to your crops (and their fruits).

Throughout this time of speedy vegetative development, preserve your crops persistently moist. Plan to water them each week except you obtain loads of rainfall. Uneven moisture, notably prolonged intervals of dry soil, may cause fruits to develop poorly and style bitter.

Use a soaker hose or different method to water crops from the underside. Attempt to keep away from spraying water on the leaves. Moist foliage is an invite to illnesses like powdery mildew that thrive in high-humidity environments.

Cucumbers may be simply watered if they’re container grown.

You probably have just some crops or are rising them in a container, you may simply water with a hose or watering can, controlling the move of water simply in direction of the bottom of the plant and across the roots.

Pests and Illnesses

Close-up of a cucumber leaf infected with powdery mildew. The leaf is large, heart-shaped, wide, dark green in color with serrated edges. The surface of the leaf is covered with a white powdery coating.
Powdery mildew can have an effect on cucumber crops and thrives in high-humidity environments.

A number of pests and illnesses can have an effect on cucumbers. A number of of the most typical points are listed right here.

Squash Bugs

  • Massive white, inexperienced, or brown bugs that love cucumbers and squash
  • Squash bugs suck plant sap and trigger crops to weaken and die
  • Take away and kill any seen squash bugs and their egg clusters
  • Take away plant particles to scale back hiding locations for overwintering bugs
  • Destroy heavily-infected crops

Cucumber Beetles

  • Small yellowish-green beetles with black spots or black and yellow stripes
  • Beetles eat quite a few holes in leaves
  • Take away plant particles and weeds the place beetles might disguise
  • Rotate crops
  • Keep away from over-use of pesticides

Bacterial Wilt

  • A bacterial an infection that causes the plant to wilt
  • Contaminated crops won’t get better
  • Destroy contaminated crops; don’t compost
  • Bacterial wilt is unfold by cucumber beetles

Powdery Mildew

  • White or grey coating on leaves
  • Most typical in excessive humidity environments
  • Good air circulation might help forestall mildew

Listed here are a couple of basic ideas to assist preserve your crops wholesome and keep away from pests and illnesses:

  • Rotate crops annually
  • Take away lifeless plant matter to maintain the backyard clear
  • Develop disease-resistant varieties
  • Develop companion crops to discourage pests

Companion Crops

Close-up of growing cucumbers, cabbages, leeks in the garden in rows. The cucumber plant has broad, dark green, palmate-shaped leaves with 5-7 lobes. The cabbage has a large head surrounded by large broad blue-green leaves with purple veins.
Cabbage generally is a helpful companion plant for cucumbers, offering shade and appearing as a pure pest deterrent.

Companion planting is a method to develop a number of completely different crops collectively in a manner the place one species advantages one other. Companion planting can present structural assist, shade, entice pollinators, enhance soil high quality, or repel pests. There are a number of good companion crops for cucumbers.

Cucumber Companion Crops
Beans Cabbage Celery
Corn Lettuce Radish
Dill Marigolds Nasturtiums


Close-up of many ripe cucumbers on a bush in the garden. The plant is a vine with large, green, palmate-shaped leaves that have a rough texture. The fruits are elongated cylindrical in shape, with a firm dark green bumpy surface.
Cucumber crops begin flowering round 40 days after planting, with female and male flowers attracting pollinators.

Cucumbers will begin flowering anyplace from 40 to 55 days after planting. In the event you look carefully, you’ll discover that your plant produces two various kinds of flowers.

The feminine flowers have a tiny unfertilized cucumber below them, whereas male flowers emerge immediately from the stem. Sometimes the male flowers bloom earlier than the feminine flowers, so don’t fear should you don’t initially see each varieties.

Cucumber flowers are brilliant yellow with 5 petals. These flowers entice many pollinators, and honeybees love them. You’ll undoubtedly need some pollinators round to cross-pollinate your cucumber flowers. After you have each female and male flowers, with pollinators flying between them, you can begin searching for your first fruits!

The start of flowering additionally signifies an excellent time so as to add some fertilizer to your crops. Use natural compost or aged manure and work that in across the roots of your plant right now.

You may as well use a liquid or granular fertilizer formulated for backyard greens. Observe the instructions on the bundle for greatest outcomes, however watch out to not over-fertilize, as this could injury your crops and fruits.


Close-up of many ripe cucumbers on a bush in the garden. The plant is a vine with large, green, palmate-shaped leaves that have a rough texture. The fruits are elongated cylindrical in shape, with a firm dark green bumpy surface.
Cucumber crops bear tiny fruits that develop quickly, requiring moist soil to forestall bitterness.

The fruiting stage might be essentially the most thrilling stage to date. You’ve gotten planted seeds and watched them develop and produce their first flowers. Lastly, you start to see your first cucumber fruits. Cucumber fruits start very tiny however develop shortly.

A fertilized feminine flower takes roughly 7 to 12 days to supply ripe fruit. You don’t have to do something particular throughout this time. Simply ensure to maintain your plant moist. Cucumber fruits that ripen throughout very dry soil circumstances may be considerably deformed but additionally are inclined to style bitter. Hold the soil moist if you’re wanting ahead to a properly shaped, crisp, juicy cucumber.

Essentially the most severe pest you might encounter that immediately impacts your fruits is the pickleworm. Pickleworm is the grub-like larvae of a night-flying moth.

The grownup moth lays inconspicuous eggs on the plant, and when the egg hatches, the larvae start to feed on the cucumber fruit from inside. Indicators of a pickleworm an infection embody: holes in your fruits, piles of white worm frass (excrement) simply exterior the holes, and greenish-yellow larvae burrowing within the fruits.

The very best methods to fight pickleworms are by planting early-maturing varieties that ripen earlier than these bugs turn out to be energetic or choose pest-resistant varieties. Whereas spraying pesticides might deter grownup moths from laying eggs on the vines, spraying with pesticides will hurt helpful bugs and gained’t have any impact on larvae already inside your fruits.


Close-up of a male hand picking up a ripe cucumber fruit in a greenhouse. The plant has climbing pale green hairy stems with large green lobed leaves. The fruit is oval, cylindrical in shape with a hard, dark green skin and a waxy, bumpy surface.
Prepared-to-harvest cucumbers have darkish inexperienced, agency skins, and differ in size relying on the range.

Cucumbers usually take anyplace from 50 to 70 days after planting seeds till your first harvest. One other manner to take a look at it’s that it takes about 1 to 2 weeks after the feminine flowers seem for the fruits to ripen totally. Regulate the cucumber fruits as you’re ready to reap them.

You’ll know after they’re prepared to reap as a result of they’ll look prepared. Relying on the range, search for a mature-looking agency fruit of the approximate dimension indicated in your seed packet.

For many varieties, the skins will seem darkish inexperienced and agency. In the event you wait too lengthy, the fruits will begin to flip yellow, and the seeds might be bigger and harder (except you may have lemon cucumbers which might be rounded and switch yellow to point they’re prepared to reap, or white cucumbers that stay a cream shade).

A normal slicing cucumber might be 6 to eight inches lengthy, and a typical English cucumber or seedless cucumber might be fairly a bit longer, round 12 to 14 inches.

Ultimate Ideas

Cucumbers are a wonderful summer season crop that anybody can develop in a sunny backyard plot or as a potted patio planting. It’s fairly a deal with to take pleasure in your personal home-grown summer season veggies. Cucumbers may be began indoors or out and require full solar and wealthy, moist soil.

Hold them heat and moist throughout all the rising season, and look ahead to any early indicators of pests and illnesses. Take pleasure in consuming your cucumbers recent from the backyard, or attempt some distinctive methods to organize them. Particularly on the most well liked summer season days, a juicy and crunchy cucumber tastes cool and refreshing.

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