{"id":208186,"date":"2025-06-27T14:00:00","date_gmt":"2025-06-27T12:00:00","guid":{"rendered":"https:\/\/atami.com\/blog\/uncategorized-en-zaf\/water-saving-substrates-how-to-grow-more-with-less-water"},"modified":"2025-06-27T16:50:18","modified_gmt":"2025-06-27T14:50:18","slug":"how-much-to-water-vegetable-garden-substrate-tips","status":"publish","type":"post","link":"https:\/\/atami.com\/en-zaf\/blog\/cultivation\/how-much-to-water-vegetable-garden-substrate-tips","title":{"rendered":"Water-saving substrates: how to grow more with less water"},"content":{"rendered":"\t\t
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Climate change, more frequent heat waves and restrictions on water use are leading many growers to rethink the way they water. In particularly hot or dry areas – such as southern Europe, California or Australia – optimising water use is not just a smart choice: it actually becomes a necessity.<\/p>\n

 <\/p>\n

In both home and professional cultivation, the same question arises:
How to keep moisture in the substrate without choking the roots or relying on constant watering?<\/p>\n

 <\/p>\n

The answer lies in water-saving substrates: mixes designed to retain moisture better, reduce evaporation and release water just when the plant needs it.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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What makes a substrate \"water-saving\"?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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It’s not enough for a substrate to absorb water well: to be considered water-efficient, it has to meet a number of key conditions:<\/p>\n

 <\/p>\n

1. High water holding capacity without waterlogging.<\/strong>
The ideal substrate stores water in its interior and releases it little by little, as the plant demands it. This prevents drainage losses and reduces the frequency of watering.<\/p>\n

 <\/p>\n

2. Good aeration<\/strong>
Retaining water should not mean drowning the roots. A good substrate should still allow oxygen to circulate to maintain root activity and avoid problems such as rotting or oxygen stress.<\/p>\n

 <\/p>\n

3. Stable structure<\/strong>
Frequent watering and the passage of time can compact some substrates, making drainage difficult and oxygenation worse. A substrate with a stable structure maintains its texture and porosity, even after many watering cycles.<\/p>\n

 <\/p>\n

4. Evaporation reduction<\/strong>
Water loss from the substrate surface can be significant, especially outdoors or in hot climates. A good substrate minimises this loss through its texture, colour and composition, and can be combined with mulching to be even more effective.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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What materials help to retain water in the substrate?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Not all substrates retain water in the same way. Some materials stand out for their ability to store moisture without waterlogging or suffocating the roots. Here we explain which ones are most commonly used, how they work and how to integrate them intelligently into your crop.<\/p>\n

 <\/p>\n

1. High retention organic materials<\/strong><\/p>\n

<\/p>\n

\u2022 Coco fibre:<\/strong> A favourite in hot climates and demanding crops.<\/p>\n

<\/p>\n

o It acts like a sponge: it absorbs water quickly<\/strong> and releases it little by little.
\no Improves the structure and oxygenation<\/strong> of the substrate.
\no It is reusable, sustainable and pH stable.<\/p>\n

 <\/p>\n

\u2705 How to use it?<\/em> You can use it on its own (as in Cocos Substrate<\/strong><\/a> by Atami) or mix it with your usual substrate<\/strong> to improve its water retention capacity.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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\u2022 Composted organic matter:<\/strong> Compost or worm castings<\/strong> also improve moisture retention.<\/p>\n

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o They increase water and nutrient exchange capacity.<\/strong>
\no They support microbial activity<\/strong>, which is key to soil health.<\/p>\n

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\ud83d\udd0e Please note:<\/em> some materials such as peat can become compacted if they dry out completely. It is advisable to combine them with elements that provide aeration.<\/p>\n

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2. Water-retaining inorganic compounds<\/strong><\/p>\n

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\u2022 Vermiculite:<\/strong> Very light and with high absorption capacity.<\/p>\n

<\/p>\n

o It absorbs water and nutrients<\/strong> like a sponge.
\no Ideal for seedbed mixtures or areas with infrequent irrigation.<\/p>\n

 <\/p>\n

\u2022 Perlite:<\/strong> Although associated with aeration, it also retains some water in its pores.<\/strong><\/p>\n

<\/p>\n

o Prevents caking of the substrate.
\no Improves the air\/water balance, especially in small pots or clay soils.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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3. Additives and complementary techniques<\/strong>
\nIn addition to choosing the right substrate, you can apply certain techniques or materials to further reduce water consumption<\/strong> and improve irrigation efficiency. Here are some of the most effective ones:<\/p>\n

<\/p>\n

\u2022 Padding (surface coating)<\/strong>
\nCovering the top of the substrate with organic materials such as straw, hemp or bark helps to conserve moisture in the root zone.<\/p>\n

<\/p>\n

o Reduces<\/strong> direct evaporation<\/strong> by up to 70 %.<\/p>\n

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o Stabilises the temperature<\/strong> of the substrate, which is key in very hot climates.<\/p>\n

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o Improves the efficiency of substrates<\/strong> such as Bi-Grow-Mix or mixtures with Cocos Substrate.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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It is a simple, economical technique that is fully compatible with organic or live soil cultivation.<\/p>\n

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\u2022 Water retaining polymers (professional use)<\/strong><\/p>\n

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These polymers act like sponges that absorb irrigation water and gradually release it<\/strong> as the plant needs it.<\/p>\n

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o Its use is more widespread in technical gardening<\/strong>, landscaping or nurseries.<\/p>\n

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o They can maintain moisture for several days<\/strong>, which reduces the frequency of watering.<\/p>\n

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o Not recommended<\/strong> for organic farming<\/strong>, as they are not biodegradable.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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\u2022 Other tricks that make a difference<\/strong><\/p>\n

o Large plastic pots:<\/strong> they take longer to dry out and retain moisture better than clay or fabric pots.<\/p>\n

o Avoid waterlogging:<\/strong> a good substrate does not need to be soggy; light, regular watering is best.<\/p>\n

o Water in cool hours<\/strong> (morning or evening) to avoid evaporation losses.<\/p>\n

o Control drainage:<\/strong> too much can cause water to be lost before it can be used.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Atami tips on how to save water from the substratum<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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At Atami we offer effective solutions that optimise water use in all types of crops. If you want to reduce water consumption without sacrificing the yield of your plants, these tips can make a difference:<\/p>\n

 <\/p>\n

1. Use substrates with high water retention and good aeration.<\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t

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Cocos Substrate<\/strong><\/a> is formulated with washed and stabilised coco fibre that acts like a natural sponge: it absorbs water quickly and releases it little by little as the plant needs it.
It is an ideal choice if you grow in warm climates, under LED lighting or with controlled irrigation systems.<\/p>\n

\u2022 Supports constant oxygenation of the roots.
\n\u2022 Avoids waterlogging without water stress to the plant.
\n\u2022 Perfect for drip or automatic irrigation.<\/p>\n

You can also mix it with your usual substrate<\/strong> (30-50 %) to improve water holding capacity and structure without having to completely change your growing mix.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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2. Improve soil structure in outdoor crops<\/strong>
Whether you grow directly in soil or in large pots outdoors, Bi-Grow-Mix<\/strong><\/a> is a versatile option that combines selected peat, perlite and organic matter.<\/p>\n

\u2022 Retains moisture in depth without compacting.
\n\u2022 Supports beneficial microbial activity.
\n\u2022 Helps regulate hydration even on hot days.<\/p>\n

Ideal for urban gardens, organic farming and living soil.<\/p>\n

 <\/p>\n

3. Accompany with adequate liquid nutrition<\/strong>
Good water retention is of little use if the plant cannot access nutrients when it needs them.<\/strong><\/p>\n

 <\/p>\n

To ensure a perfect balance, combine your substrates with liquid fertilisers such as B’cuzz Soil A&B<\/strong><\/a>, Terra Leaves<\/strong> or VGN base nutrients<\/strong>. If you prefer slow release granular nutrition, ATA NRG Upgrade<\/strong> is ideal.<\/p>\n

 <\/p>\n

All guarantee a constant supply of nutrients, even when watering cycles are more spaced out.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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4. Protects the substrate surface<\/strong>
Covering the top of the substrate with organic materials such as bark, hemp or straw helps reduce evaporation by up to 70%.
This simple gesture boosts the water efficiency of substrates, especially outdoors or in crops with high sun exposure.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Conclusion: optimise irrigation from the substratum<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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The use of substrates with good water retention capacity is not just a trend: it is a smart strategy, especially in hot areas, demanding crops or limited irrigation systems.<\/p>\n

 <\/p>\n

Choosing the right substrate and combining it with the right techniques can make the difference between a crop that barely survives… and one that thrives.<\/p>\n

 <\/p>\n

What to remember:<\/strong><\/p>\n

\u2022 Not all substrates retain water in the same way:<\/strong> those that combine water retention and aeration (such as coco or peat with perlite) are ideal.
\n\u2022 The substrate is only one part of the system:<\/strong> factors such as the type of pot, the timing of watering and the use of mulch also play a major role.
\n\u2022 Prevention is better than correction:<\/strong> investing in a good substrate and applying complementary techniques from the start helps you to save water and avoid stress on your plants.
\n\u2022 Atami products such as Cocos Substrate<\/a> or Bi-Grow-Mix<\/a><\/strong> are designed to offer real solutions, both indoors and outdoors, in organic or technical systems.<\/p>\n

 <\/p>\n

In short, taking care of water starts with taking care of the soil. And with the right tools, it is possible to grow more… with less.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

Climate change, more frequent heat waves and restrictions on water use are leading many growers to rethink the way they water. In particularly hot or dry areas – such as southern Europe, California or Australia – optimising water use is not just a smart choice: it actually becomes a necessity.   In both home and […]<\/p>\n","protected":false},"author":6,"featured_media":208100,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"iawp_total_views":6,"footnotes":""},"categories":[328],"tags":[3617,3621,3618,3620,3622,3615,3614,3623,3619,3616],"class_list":["post-208186","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cultivation","tag-best-time-to-water-vegetable-garden-en-zaf","tag-growing-vegetables-in-water-en-zaf","tag-how-much-to-water-vegetable-garden-en-zaf","tag-how-often-should-i-water-my-vegetable-garden-en-zaf","tag-how-often-should-you-water-a-vegetable-garden-en-zaf","tag-how-often-to-water-a-vegetable-garden-en-zaf","tag-should-i-water-my-vegetable-garden-every-day-en-zaf","tag-vegetables-that-grow-in-water-en-zaf","tag-water-spinach-vegetable-en-zaf","tag-water-vegetables-en-zaf"],"acf":[],"yoast_head":"\nHow Much to Water Vegetable Garden: Save Water with Smart Substrates<\/title>\n<meta name=\"description\" content=\"Discover how much to water your vegetable garden using water-saving substrates. Grow healthier plants with less water and improve garden efficiency.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/atami.com\/en-zaf\/blog\/cultivation\/how-much-to-water-vegetable-garden-substrate-tips\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Water-saving substrates: how to grow more with less water\" \/>\n<meta property=\"og:description\" content=\"Discover how much to water your vegetable garden using water-saving substrates. Grow healthier plants with less water and improve garden efficiency.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/atami.com\/en-zaf\/blog\/cultivation\/how-much-to-water-vegetable-garden-substrate-tips\" \/>\n<meta property=\"og:site_name\" content=\"Atami\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Atami.International\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-27T12:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-06-27T14:50:18+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/atami.com\/wp-content\/uploads\/2025\/06\/Water-saving-substrates-how-to-grow-more-with-less-water.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"2048\" \/>\n\t<meta property=\"og:image:height\" content=\"1462\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Estela\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@AtamiEU\" \/>\n<meta name=\"twitter:site\" content=\"@AtamiEU\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Estela\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":[\"Article\",\"BlogPosting\"],\"@id\":\"https:\\\/\\\/atami.com\\\/en-zaf\\\/blog\\\/cultivation\\\/how-much-to-water-vegetable-garden-substrate-tips#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/atami.com\\\/en-zaf\\\/blog\\\/cultivation\\\/how-much-to-water-vegetable-garden-substrate-tips\"},\"author\":{\"name\":\"Estela\",\"@id\":\"https:\\\/\\\/atami.com\\\/en-zaf#\\\/schema\\\/person\\\/dbe79913d14fa3d58eac653eb5bc74b5\"},\"headline\":\"Water-saving substrates: how to grow more with less water\",\"datePublished\":\"2025-06-27T12:00:00+00:00\",\"dateModified\":\"2025-06-27T14:50:18+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/atami.com\\\/en-zaf\\\/blog\\\/cultivation\\\/how-much-to-water-vegetable-garden-substrate-tips\"},\"wordCount\":1306,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/atami.com\\\/en-zaf#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/atami.com\\\/en-zaf\\\/blog\\\/cultivation\\\/how-much-to-water-vegetable-garden-substrate-tips#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/atami.com\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/Water-saving-substrates-how-to-grow-more-with-less-water.webp\",\"keywords\":[\"best time to water vegetable garden\",\"growing vegetables in water\",\"how much to water vegetable garden\",\"how often should i water my vegetable garden\",\"how often should you water a vegetable garden\",\"how often to water a vegetable garden\",\"should i water my vegetable garden every day\",\"vegetables that grow in water\",\"water spinach vegetable\",\"water vegetables\"],\"articleSection\":[\"Cultivation\"],\"inLanguage\":\"en-ZA\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/atami.com\\\/en-zaf\\\/blog\\\/cultivation\\\/how-much-to-water-vegetable-garden-substrate-tips#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/atami.com\\\/en-zaf\\\/blog\\\/cultivation\\\/how-much-to-water-vegetable-garden-substrate-tips\",\"url\":\"https:\\\/\\\/atami.com\\\/en-zaf\\\/blog\\\/cultivation\\\/how-much-to-water-vegetable-garden-substrate-tips\",\"name\":\"How Much to Water Vegetable Garden: Save Water with Smart Substrates\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/atami.com\\\/en-zaf#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/atami.com\\\/en-zaf\\\/blog\\\/cultivation\\\/how-much-to-water-vegetable-garden-substrate-tips#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/atami.com\\\/en-zaf\\\/blog\\\/cultivation\\\/how-much-to-water-vegetable-garden-substrate-tips#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/atami.com\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/Water-saving-substrates-how-to-grow-more-with-less-water.webp\",\"datePublished\":\"2025-06-27T12:00:00+00:00\",\"dateModified\":\"2025-06-27T14:50:18+00:00\",\"description\":\"Discover how much to water your vegetable garden using water-saving substrates. 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