Last Updated on August 12, 2021
Gardening is a matter of science and knowing exactly what your plants need to not only survive but thrive.
Plants require the perfect amount of water, sunlight, and nutrients so they can flourish and when you have a vegetable garden, these amounts can vary significantly depending on what you grow.
Some people plant drought-tolerant vegetables to allow them to water less frequently and others have an assortment of vegetables that each need different things.
This should be up to the gardener to decide when planning their vegetable patch or bed, keeping in mind how much time and resources you want to put towards watering it.
So, how often should you water a vegetable garden?
This depends on the contents of the garden, as the individual plants will dictate how often and much they need to be watered, and the current climate.
As a general rule of thumb though, you should give a thorough soaking once a week at the very least, but maybe more in hot weather conditions.
Vegetables are high yield plants and they need a lot of water and nutrients to keep growing, and it’s up to the gardener tending the patch to know what’s best.
With our help, you’ll be able to come up with a regular watering schedule that suits your plants and guarantees the tastiest produce possible.
Table of Contents
Why Do Vegetables Need Water?
A vegetable is the edible portion of a plant, and all plants need water to survive.
Water is part of the process of photosynthesis and when the water is absorbed through the roots, it travels through the stems and into the leaves, reaching the chloroplasts.
Water is also needed to transport the nutrients extracted from the soil into the plant, so it has two roles.
The roots of a vegetable’s plant are deep down in the soil where there’s no moisture unless they’re exposed to regular rainfall or a committed gardener who keeps them hydrated.
A deep and thorough watering is required for vegetables as their roots travel far below the soil and they won’t get any of it otherwise.
When only giving a light sprinkle, you’re feeding just the roots near the top, and the rest of the plant will be dried out, resulting in wilted or small vegetables.
Seeds in a vegetable garden require just as much moisture, and because they don’t have roots, there’s no way for them to access water until it hits them.
Therefore, if you want a vegetable plant seed to germinate, it needs to be watered regularly and thoroughly as well so that it goes deep down.
How Much Water Do They Need?
Some people assume that giving the garden a light sprinkle with the hose every couple of days is the same as a full soak, but it’s not.
A vegetable garden should be watered thoroughly so the water reaches through to the bottom of the soil, and this can be done once a week.
The general rule to follow is that your vegetables need an inch of water per week but this could vary significantly depending on the weather.
To calculate how much you need, you might use a rainfall gauge or follow a weather report to see what has fallen naturally in your area in the last few days and top up the rest yourself using the hose or watering can.
Those living in dry climates will need to double this amount to ensure their plants don’t dry out, and for people in hot locations or growing vegetables during summer, you’ll need to add even more.
An easy calculation to follow is an extra ½ inch of water per week for every 10 degrees the temperature climbs over 60.
How Often Should You Water Vegetables?
Most vegetable gardens can be watered once or twice a week with good results, but this is only if the plants contained in them tolerate this schedule and if the weather has been kind.
Otherwise, you might even need to water your plants every few days just to keep them happy.
Rather than having a set schedule and following it with precision, it’s better to get in touch with your plants and see what they need. The easiest way to do this is by sticking a finger into the soil and feeling how dry it is.
If it feels dry still a few inches down, your plants are due for their next drink of water.
Some people look for signs of wilting as an indicator that it’s time to water but this isn’t always accurate.
Plants kept outdoors, especially vegetables, can start to droop as the temperatures heat up around lunchtime but they’re back to their usual springy selves when the late afternoon rolls around.
Therefore, using the soil as your checkpoint will provide the most accurate reading.
All plants are unique, and in a vegetable garden, you’re likely growing different things that have their own watering requirements.
Here are a few popular veggie patch residents and how often they like to be watered:
- Cabbage: Twice a week, especially when dry weather is around.
- Carrots: Never let the soil get bone dry with carrots and water twice every two weeks as the plant matures.
- Lettuce and spinach: Water twice a week consistently.
- Peppers: Twice a week and steadily watered from sowing to harvest.
- Onions: Half a water a week or full watering in summer.
- Radishes: Water regularly twice a week.
- Tomatoes: A lot of water twice a week, especially when the fruit is forming.
The Best Time of Day to Water
Plants are picky about when they’re watered and not just for their weekly schedules.
The time that you water a plant also matters, especially for vegetables, so getting a timetable going is a must-have for any budding gardener.
A vegetable patch should be watered first thing in the morning while the weather is still a little cool.
This will allow the water to reach down to the bottom of the soil, travel through the rest of the plant, and make it happy before the sun comes out too strong and powerful.
Morning watering sessions are also important to allow the plant to dry off naturally with the sun.
A plant watered at night will be more susceptible to developing fungi and other conditions as they hold onto the water in their leaves and other sensitive areas, and then these problems spread through the rest of the plant.
Hydrated and Happy Vegetables
It’s a fact of life that all plants need water to survive, and your prized veggie patch is no different.
Although they might have unique requirements in terms of sunlight, soil, and hydration, you can guarantee that they’ll need a good drink of water regularly to be able to thrive.
To get the true farm to table experience at home, you should consider starting a vegetable garden yourself.
Once established, these plants only require a bit of maintenance, regular watering, and some fertilization, and the reward is flavorsome and fresh ingredients that you grew yourself, being served at your table every night.
Watering a vegetable garden can be a great joy for the green thumb as it’s providing your beloved plants with a drink of water, and gives you a chance to check on their growth progress.
If you’ve been thinking about growing a vegetable garden of your own and want to know more, we’ve answered some FAQs on the subject that might be helpful.
What is the Easiest Vegetable to Grow?
Beginner gardeners looking to start a veggie patch will do well planting things like onions, garlic, beans, radishes, potatoes, peas, and salad leaves.
These all require minimal care, produce good yields, and are easy enough for an absolute beginner to grow from seed to maturity.
How Deep Should a Vegetable Patch Be?
If you’re building a garden bed to grow a vegetable patch, you’ll need around one foot of height that will be filled with soil to give the roots of the vegetables ample space to spread and grow.
Choose a nutrient-rich and easily drained soil for most vegetables, unless otherwise directed.
Should I Line My Vegetable Garden With Plastic?
Although it might seem tempting to place plastic at the base of the vegetable garden to keep the soil in, you should use a porous fabric instead, like a landscape fabric.
Lining a bed with plastic will trap moisture inside, not let the soil drain adequately, and keep away helpful visitors to the garden, like worms.