
Watering garlic the right way helps it grow strong and healthy. Let’s explore how much water garlic needs and why it’s important.
Garlic needs approximately 1 inch of water per week. Maintaining consistent soil moisture is vital, especially during dry spells. Overwatering should be avoided to prevent fungal issues or bulb rot.
Understanding how to water garlic at different stages can help your plants thrive. The amount of water garlic needs changes as it grows. Here’s a look at the best watering practices for garlic.
WATERING GARLIC THROUGH ITS GROWTH STAGES
Though watering garlic about one inch a week is a good goal, garlic actually requires different watering needs at various stages of its growth cycle.
Planting Stage
Strong roots are the goal when first planting garlic. At this stage, the soil should be kept consistently moist but not soggy. Watering a few times a week and making sure the water penetrates about six inches deep is a good rule of thumb. Water reaching this depth encourages roots to grow deeper. Watch the weather and make sure to water more often during dry spells, especially when your garlic is first growing.
Growth Stage
The general guideline is to provide about 1 inch of water per week while the garlic is growing. Rainfall counts as watering so be sure not to over-water. Evenly moist soil is important because garlic does not tolerate dry conditions well. Mulching will help preserve soil moisture so you will not need to water as often. Good mulch for garlic would include straw, leaves, grass clippings, compost, woodchips, or bark. Though garlic will not tolerate dry soil, keep in mind that it is a bulb plant. Bulb plants can rot if they are too wet in the soil. Good water balance is key.
Maturation Stage
When your garlic is reaching maturity, it is a good practice to decrease watering. Mature bulbs that are overwatered can develop fungus or bulb rot. Many stop watering all together in the last two to three weeks before harvesting. Letting the soil dry out allows the mature bulb’s outer skin to become tough, a beneficial quality for storing garlic long term.

FERTILIZING GARLIC: STAGE-BY STAGE GUIDE
Adding fertilizer to your water can benefit garlic growth, but it should be done carefully and, like watering garlic, the methods you use for fertilizing garlic should change throughout the stages of growth.
Planting Stage
To provide essential nutrients for garlic root development, it can be beneficial to add a balanced fertilizer to the soil instead of the water. This can boost new garlic root strength. A balanced fertilizer contains equal parts of nitrogen (N), phosphorus (P), and potassium (K). An example of a balanced fertilizer to use would be 10-10-10 fertilizer. This indicates that there is 10% of each of these three nutrients. Higher numbers would indicate higher concentrations of nitrogen, phosphorus, and potassium.
Growing Stage
Garlic could also benefit from fertilizer in the growing stage. At this time a liquid fertilizer is appropriate to mix with water to be applied every few weeks. This will support good leaf and bulb development. A fertilizer that is high in nitrogen or a balanced fertilizer is good to promote early season leafy growth. With most plants plentiful leaf growth is desirable. However, the focus of garlic is the bulb harvest. Be careful not to over-fertilize, as this can lead to excessive leaf growth at the expense of bulb development, creating leafy plants with small bulbs.
Maturation Stage
Reduce the amount of fertilizer, especially nitrogen, in the later stages of garlic growth. Too much nitrogen will delay bulb formation. Stop fertilizing approximately one month before harvest.

GARLIC IRRIGATION METHODS
Different irrigation methods can be used to water garlic effectively:

Drip Irrigation: Delivering water directly to the plant’s base, not only minimizes water wasting, but also reduces the risk of fungal diseases. Plus, adjusting drip irrigation is easy throughout the growing stages of garlic.

Soaker Hoses: The attractive benefit of watering garlic with soaker hoses is the steady, slow release of water distributes moisture evenly throughout the soil. Like drip irrigation, this method reduces the risk of fungal disease by not wetting the foliage.

Overhead Sprinklers: Even though overhead sprinklers can lead to problems like uneven watering and wet foliage, there are precautions you can take when using this method. Watering early in the day will allow the foliage to dry before evening. And you can test the depth and water saturation of your garlic’s soil with a soil moisture meter to be sure to water evenly. If you don’t have a soil moisture meter, many old farmers will assure you that you do, indeed, have ten on the ends of your hands.
SOIL PREPARATION FOR WATER RETENTION
When watering garlic, we want the water to be able to drain through loamy soil with a nearly neutral pH between 6.0-7.0. You can test your soil pH at home. Compost, well-rotted manure, or other organic matter can improve soil structure, enhance moisture retention, and also provide important nutrients. Having good soil ready to plant garlic in, prevents garlic bulb rot due to waterlogging.
SIDESTEPPING GARLIC WATERING MISTAKES
Here are some common factors to consider when trying to avoid garlic watering mistakes:
- Weather Watching: If your region or season is hot and dry, water more frequently to keep the soil from drying out around the garlic bulb. If you garden in an area with more rainfall, pay special attention to how well your soil drains and water less often. Understanding your climate is crucial to good garlic watering practices.
- Season Dry-Out: Along with weather watching, keep in mind that if you have a dry winter, you will probably need to visit the garden and water your garlic in winter to help it last until gardening season.
- Overwatering: Overwatering, as mentioned above, can lead to waterlogged soil, causing root rot and fungal diseases. Again, ensure the soil has good drainage and water only when the top inch of soil is dry.
- Underwatering: Avoid stunted growth and small garlic bulbs by providing your garlic plants with consistent moisture. Check your soil with your fingers or a water moisture meter regularly. Remember that you are aiming for approximately 1 inch of water per week.
- Inconsistent Watering: Create a regular watering schedule according to the growth stages of your garlic plants and weather conditions in your area.
- Over Fertilizing: As stated above, be careful not to over-fertilize, as this can lead to excessive leaf growth at the expense of bulb development, creating leafy plants with small bulbs.
In conclusion, understanding the do’s and don’ts for watering healthy garlic plants throughout their growth stages is crucial for cultivating robust garlic bulbs and ensuring a successful harvest. From maintaining consistent soil moisture to adjusting watering frequency based on growth phases—we can nurture strong root systems, promote optimal leaf and bulb development, and safeguard against common issues like fungal diseases and bulb rot. With these practices in mind, gardeners can confidently cultivate garlic that thrives and contributes to a bountiful harvest.
For more insights on growing and caring for garlic, explore our other garlic articles:
