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Frequency/amount to water
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sanderson
countrynaturals
cherylLun
7 posters
Page 1 of 1
Frequency/amount to water
Hello -
We've got our two beds up and running. I had our irrigation guy run a new timer for them, which delivers water from a faucet. In the beds we have grid irrigation (garden in minutes), but I was not sure how often to water, and for what duration. Let's assume no rain contribution -- as starts to become more frequent heading into this time of year.
At the moment, it's running for 10 minutes three times/day (6 am, noon, and 6 pm).
THANKS


We've got our two beds up and running. I had our irrigation guy run a new timer for them, which delivers water from a faucet. In the beds we have grid irrigation (garden in minutes), but I was not sure how often to water, and for what duration. Let's assume no rain contribution -- as starts to become more frequent heading into this time of year.
At the moment, it's running for 10 minutes three times/day (6 am, noon, and 6 pm).
THANKS



cherylLun-
Posts : 14
Join date : 2019-06-11
Location : Florida - Zone 9B
Re: Frequency/amount to water
Mine runs 15 minutes, twice a day, so that's comparable and all of my plants are happy, so it must be working. Also, your plants are smaller, so the more frequent watering makes sense. Lookin' good, btw.cherylLun wrote:Hello -
We've got our two beds up and running. I had our irrigation guy run a new timer for them, which delivers water from a faucet. In the beds we have grid irrigation (garden in minutes), but I was not sure how often to water, and for what duration. Let's assume no rain contribution -- as starts to become more frequent heading into this time of year.
At the moment, it's running for 10 minutes three times/day (6 am, noon, and 6 pm).
THANKS

Re: Frequency/amount to water
Cheryl, Use the finger test to see if you are watering the right amount. If it's dry the first couple inches, no problem, as long as it is moist below that. As the plants grow large, they will need more water. During the rainy season(s), you can stop the watering. Does this make sense?
Re: Frequency/amount to water
countrynaturals wrote:
Mine runs 15 minutes, twice a day, so that's comparable and all of my plants are happy, so it must be working. Also, your plants are smaller, so the more frequent watering makes sense. Lookin' good, btw.
Thanks

cherylLun-
Posts : 14
Join date : 2019-06-11
Location : Florida - Zone 9B
Re: Frequency/amount to water
sanderson wrote:Cheryl, Use the finger test to see if you are watering the right amount. If it's dry the first couple inches, no problem, as long as it is moist below that. As the plants grow large, they will need more water. During the rainy season(s), you can stop the watering. Does this make sense?
I'll check that out tomorrow. I've had the irrigation turned off for the last two days, as we've received over 5 inches of rain already this week !!
Thanks
cherylLun-
Posts : 14
Join date : 2019-06-11
Location : Florida - Zone 9B
Re: Frequency/amount to water
For those who might want to know, I have installed the Intelligent Irrigation Aquajet system for my 4'x4' boxes and my 13'x4'. In the 4x4 boxes I do 1 minute of watering every other day and nothing was starved for water. I was doing 1 minute everyday, but it seemed to be too much.
toledobend- Posts : 107
Join date : 2012-02-13
Location : West Central Louisiana
Re: Frequency/amount to water
A set of interesting documents from the University of California Master Gardener Program. Both documents are downloadable PDF files. In addition to a good discussion on water needs, they give good sample calculations on the amount of water raised beds need.
1. How Much Water Does My Food Garden Need?
2. Food Gardening with Less Water
3. A More In-Depth Look at Food Gardening with Less Water
1. How Much Water Does My Food Garden Need?
2. Food Gardening with Less Water
3. A More In-Depth Look at Food Gardening with Less Water
"In short, the soil food web feeds everything you eat and helps keep your favorite planet from getting too hot. Be nice to it." ~ Diane Miessler, "Grow Your Soil"
Re: Frequency/amount to water
So. sick. of watering.
Scorpio Rising-
Posts : 8568
Join date : 2015-06-12
Age : 61
Location : Ada, Ohio
Re: Frequency/amount to water
Scorpio Rising wrote:So. sick. of watering.
I know the feeling. That is why I put in drip irrigation with a timer a few years ago. I'm getting too old for dragging around water hoses and watering cans.
Last edited by OhioGardener on 7/30/2020, 9:53 am; edited 1 time in total (Reason for editing : fix spellcheck)
"In short, the soil food web feeds everything you eat and helps keep your favorite planet from getting too hot. Be nice to it." ~ Diane Miessler, "Grow Your Soil"
Re: Frequency/amount to water
The subject of how much water, and how often, came up today as a neighbor new to gardening asked how much water the vegetables need. I told him that in general vegetables need 1" of water per week, with a couple exceptions -- those exceptions are cucumbers and eggplant. Both cucumbers and eggplants need 1" of water per week until they set fruit, and then they need 2" of water per week. The reason cucumbers and eggplants need 2" of water when they set fruit is because their fruit is almost all water.
But, how much water is 1" in the garden. That is easy to calculate by converting cubic inches to gallons: 12"x12"x1" equates to 0.62 gallons of water. That means to provide 1" of water to a bed would need 0.62 gallons of water per square foot - a 4'x8' bed, then, would need 20 gallons of water to provide 1" of water to that bed. Twenty gallons sounds like a lot of water, but if you water 4 times a week, that is only 5 gallons of water each time, or if you water 3 times a week that would be 6.6 gallons each time.
With my drip irrigation I have to count the number of drip emitters in the bed, each providing .5 gph, to calculate how long the timer must run the water to provide that 5 gallons of water.
But, how much water is 1" in the garden. That is easy to calculate by converting cubic inches to gallons: 12"x12"x1" equates to 0.62 gallons of water. That means to provide 1" of water to a bed would need 0.62 gallons of water per square foot - a 4'x8' bed, then, would need 20 gallons of water to provide 1" of water to that bed. Twenty gallons sounds like a lot of water, but if you water 4 times a week, that is only 5 gallons of water each time, or if you water 3 times a week that would be 6.6 gallons each time.
With my drip irrigation I have to count the number of drip emitters in the bed, each providing .5 gph, to calculate how long the timer must run the water to provide that 5 gallons of water.
"In short, the soil food web feeds everything you eat and helps keep your favorite planet from getting too hot. Be nice to it." ~ Diane Miessler, "Grow Your Soil"
sanderson and Scorpio Rising like this post
Re: Frequency/amount to water
Wow, just over half gallon per week? my tomatoes are demanding more water and they are getting prob a gallon each every 2nd day (for now-will increase to every other day when the real heat of the summer arrives) but they are in grow bags.
Heck even my "self watering" bed (a 6' watering trough) is getting filled every 2nd or 3rd day! But we have been WEEKS without rain in E TN. Every time they forecast it, it somehow slides by us
Heck even my "self watering" bed (a 6' watering trough) is getting filled every 2nd or 3rd day! But we have been WEEKS without rain in E TN. Every time they forecast it, it somehow slides by us

lisawallace88- Posts : 28
Join date : 2022-06-20
Location : 7B Knoxville, TN
sanderson and Scorpio Rising like this post
Re: Frequency/amount to water
lisawallace88 wrote:Wow, just over half gallon per week? my tomatoes are demanding more water and they are getting prob a gallon each every 2nd day (for now-will increase to every other day when the real heat of the summer arrives) but they are in grow bags.
Yes, good point, but it is important to remember that the "one inch of water per week" is a measurement of water available to the plants. Water that runs off or evaporates is not available to the plants, likewise water that is below the root zone is not available to the plants. It is important to have heavy mulching that keeps the soil cool and contain the moisture, just as it is important to apply the water directly to the soil and not sprayed into the air.
"In short, the soil food web feeds everything you eat and helps keep your favorite planet from getting too hot. Be nice to it." ~ Diane Miessler, "Grow Your Soil"
sanderson and Scorpio Rising like this post
Re: Frequency/amount to water
Lisa, I think grow bags make a big difference due to the evaporation, as OG said. They lose moisture through the sides, not just the top as other planters. Also, my terra cotta containers likewise need more water than, say, plastic ones. Weeks??? Yikes! I lived in Nashville for years, my son is living there now. I have been to Knoxville several times, too.
Scorpio Rising-
Posts : 8568
Join date : 2015-06-12
Age : 61
Location : Ada, Ohio
sanderson and lisawallace88 like this post
Re: Frequency/amount to water
Yes, thanks! I knew the grow bags required more water than other containers, I just hadn't realized quite how much more! I'm hoping to install an irrigation system this weekend. Then the plants can be watered in the morning instead of after I get home from work, and it will be more consistent than me trying to remember and have enough energy at the end of the day! I'm getting too old for this!
lisawallace88- Posts : 28
Join date : 2022-06-20
Location : 7B Knoxville, TN
sanderson likes this post

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