Observations of a Crazy Winter on our Rain Garden

As a "would-be citizen scientist", I guess it's time to share my observations about the impacts of our crazy weather on our front yard rain garden this winter. 

The leaves on the jujube trees have fallen, as expected this time of year. We have taken the advice of local rainwater harvesting guru Brad Lancaster and left them in the basin to nourish the soil and retain as much moisture as possible. 

The globe mallow (the green shrub above) seems confused by our crazy winter weather. Is it sticking around in response to the unseasonably warm weather? (Many days around 80 degrees.) We haven't had our usual winter rains, so there isn't enough moisture to allow it to grow flowers. 

But take a closer look... Tiny yellow wild flowers have come up in the mulch. I spotted some little butterflies and bees pollinating them. (There is actually a species of native bees that burrows down in the mulch.) 

Our poor moringa trees also seem confused by the variable weather. They haven't frozen yet, so that's good. We still hope to gather some leaves for tea. (We have already harvested them twice this year. But they usually grow back...) They have sprouted new leaves. But I have watched in anticipation for weeks, and the  leaves don't grow big enough to harvest. And a few leaves have turned yellow. 

The latest development is some buds sprouting, but even with some additional rainwater from our cistern, they are struggling to bloom. (Thank heavens for the one winter storm in November that filled our cisterns.)

Moringa story continued here: 

Wrapping up for the freeze

Despite being watered daily, our sunchokes never grew beyond a foot before they withered up and died. They grew 3 feet last year and had yellow flowers. Last December I harvested more of the yummy tubers than we could eat...

As passionate rainwater harvesters, we always look forward to the winter rains filling our basins and cisterns. So it is pretty discouraging to have such a dry winter. Believe me, this isn't normal. Check out the normal highs and lows and rainfall in December and January from the National Weather Service. 

Our mesquite trees are starting to turn yellow and lose their leaves (which is normal this time of year.) The leaves that are left after the leaf cutter ants get their share become a part of the mulch in our front yard basin.  

 I'm afraid we won't have the abundant wildflowers we had last year. But I still find joy in seeing a variety of birds digging around in the mulch for food. I recently caught this goldfinch (below) getting a drink in our bird bath. 

Every morning Dan and I watch from the dining room window as the birds land on our decorative saguaro rib and then dive down to get a drink or splash around in our bird bath. 

Some regular guests are the Gila woodpeckers (pictured below), mourning doves, curve-billed thrashers, mockingbirds, sparrows and finches. We even had a red tail hawk once. 

This particular day there were so many birds all around our rain garden. I shooed away a stray cat that was hiding under the hackberry ready to pounce. That's why we keep ours in doors. Here is Freddy watching safely from his perch in the house. 

So, what have I learned from my observations during this unusual winter? That it is important to leave the leaves in the basin. The pollinators and birds really appreciate it. Cold weather or hot, rain or no rain, I still love my basins!  #lovemyrainbasin

More information: 

Basin Observations from a Would-be Citizen Scientist

Basin Observations from a Would-be Citizen Scientist

The nurse tree mesquite provides shade and nitrogen for the baby saguaro and hackberry

It's been a while since I've blogged about my beloved front yard basin. But I figured this was a great time to celebrate our basin with a new sign! Thanks to Abril for making it! #lovemyrainbasin

During these trying times I have found solace in tending the new pollinators I planted, watering them daily with rainwater from our cistern. All the while I have been recording the progress with pictures. Scrolling through google photos over the past nine months, I felt like a citizen scientist observing how our unpredictable, fluctuating weather has affected the plants and soil in our basin. 

The first thing I noticed was that through the extreme heat and long periods without rain our native trees (mesquite, acacia, and hackberry) thrived - even as our prickly pear cactus shriveled and drooped.

Our jujube trees did incredibly well too with just the rainwater from the roof that sunk into their basin. Rainwater flowed off of one side of the roof into the gutters and downspout then into the long basin. The trees grew 3 feet and produced an abundance of fruit. The waxy leaves stayed green until recently. Now they are showing their fall colors - which is kinda nice. 

You might be wondering about the dead "weeds" in the basin. But the reason the jujubes did so well was that I kept the native plants and grasses in the basin long after they turned golden brown to retain the moisture longer and to provide nutrients to the soil.

The dry grass and globe mallow slow down the rainwater so it can sink in rather than leave the basin.

I planted a desert senna plant in the basin last January. It struggled in the freeze, but the mulch helped keep its roots warm. 

It came back in August along with horse purslane that acted as living mulch to nourish the soil.

Look at that senna now! It seems confused by the warm weather and recent rain. It is starting to bloom!

When we first put in our basin, we filled it with mesquite chip mulch. But as that has been breaking down into soil, we allowed the basin to be covered with a living horse purslane mulch. 

As the horse purslane died, I broke it down into straw-like mulch. Here I am showing some to my son's girlfriend. She looked a little concerned about the dry grasses, but I reassured her that native bunch grass was a part of a working basin.

We were delighted when Arizona poppies popped up in that same area in March. 

When those poppies died, I also broke their stems into a straw-like mulch. I even gathered some extra from a neighbor and spread them in the basin. I saved 6 buckets full from the landfill! 

Check out how the poppy stems floated when the basin filled with the June rain...

When the water sunk into the basin, the poppy stems settled back down and the doves enjoyed evaporative cooling!

All that mulch created richer soil...

So I could plant more pollinators in the basin... And the cycle goes on.

Have I mentioned lately that I love my rain basin? 

How about you? Share the love by posting pics of your basins on your social media pages with the hashtag: #lovemyrainbasin.  

Read more about the campaign here: 

Love my rain basin campaign

More stories about our front yard basin here: 

Our Yard the Bird Feeder

Create your own Sonoran Desert Food Forest

Sharing my passion with the next generation

I always enjoy sharing my knowledge about sustainability with the next generation. So I was especially excited to give a tour of our rainwater basins to my son Jeremy's girlfriend Lillie, a civil engineering major with an emphasis on the environment. Can Jeremy pick 'em or what?!!! Jeremy tagged along to find out which plants to water when Dan and I go away on vacation. He took some photos while he was at it. Thanks, Jeremy! 

Our first stop was filling up my water bucket at the slimline tank. I explained how we get a lot of rainwater off of the roof (nearly 11,000 gallons a year.) Some of that water is directed from a gutter to a downspout and into our jujube basin. Gutters also direct water to the various cisterns around the house. 

I was delighted to share how the nearby jujube trees had grown three feet last year on just rainwater collected in the basin. And they were starting to bear the first fruit of the season. Even after this long dry spell! 

I had recently chopped and dropped some dried native plants (that some people might call "weeds") into the basin to create organic mulch. That observation inspired this story. Five years ago, Dan had removed a row of aging oleanders and dug a basin there for three baby jujube trees. The one planted farthest from where the oleanders were grew four times as fast as the two planted in the soil poisoned by the oleanders. But native grasses, organic matter (chopped weeds and fallen leaves) and rainwater mitigated the soil, so now the other two trees have caught up with the biggest tree!

The next stop was our shallow front yard basins. (See the pic at the top of the page.) The wood chip mulch has mostly broken down into soil. (We need another truck load.) So a bunch of poppies and native grasses grew there. When they died, I broke the stems of the poppies into hay-like mulch and left the dried grass (that had gone to seed) to feed the ants, birds and squirrels. 

Doves eating grass seeds in the shade of a desert acacia tree by the PLANTS FOR BIRDS sign.

Here I am pointing out the bird bath in the mesquite guild. (It is so important to provide daily water for the birds - especially in this heat!) The mesquite tree acts as a nurse plant providing shade and nitrogen for the nearby hackberry and a young saguaro. Notice that even during this dry spell, the native trees are green and thriving.

Next we visited the right of way basin where our moringa is coming back nicely after dying back in the hard freeze. Lillie gamely tasted the leaves of the nutritious "horseradish plant." 

Then I filled up my watering can and watered our flowering hibiscus plant that we recently planted in the greywater basin. There it benefits from greywater from our outdoor washing machine. The drought tolerant heritage pomegranate in the basin was also bearing fruit! It's always good to have that extra washing machine water for higher water-use plants like fruit trees.

I pointed out how the big slanted roof on the neighbors house had directed so much water into our yard that it had dissolved a wooden shed. Our kind neighbor gave Dan permission to install a gutter there to direct rainwater into a cistern to water our little garden. 

Jeremy followed me and Lillie into our fenced-in garden where he took this picture of his loved ones and learned that I use one watering can full of water on our little veggie garden. 

Lillie learned that the Palo Verde trees shade the garden from our hot summer sun and provide nitrogen to the soil. Bird netting cages keep the squirrels out of the chard (that grows year-round here.) And we use our dirty dishwater (with salt free soap) to moisten our compost pit. Every drop of water is precious in the desert.

It was so fun sharing my passion with Lillie and Jeremy. Can't wait to see what the next generation does... 

Continue our tour of my favorite places to bring visitors here:

https://www.sustainablelivingtucson.com/2024/05/my-favorite-places-in-tucson-to-bring.html

Share the love! Join our campaign and show your friends the joys of rainwater harvesting basins.

Just post a pic of your basin with the hashtag #lovemyrainbasin

https://www.sustainablelivingtucson.com/2023/04/love-my-rain-basin-campaign.html

#lovemyrainbasin

Surviving the "Nonsoon"

Tucsonans have developed many theories on how to bring forth the monsoon rain. Some claim washing their car will do the trick. Others swear it's deep watering their trees. A Facebook friend urged me to use the last bit of water in my rain tank that I reserved for my veggie garden. (I had already gone through most of the water in four cisterns and two fifty-five gallon rain barrels.)  So...despite proclaiming that I don't use any city water for my landscaping on the six o'clock news last spring, I finally broke down and deep watered my jujube trees. It stormed that very afternoon... 

You're welcome!

Gardening in this extreme weather has been very humbling. I have struggled to balance conserving water during our current water crisis and keeping my poor plants alive in this unrelenting heat.

I've lived in Tucson nearly 30 years and I have never experienced anything like this. (The drought the year before last came the closest.)  I try to get up early enough to water my little veggie garden before it reaches 80 degrees (the temperature when evapotranspiration stops on some plants), but most days the temperature never dips below 80 degrees - even at night! Some evenings it has gotten as high as 90 degrees! That's bad news for people and plants. And it's NOT normal. In the old days, Tucsonans slept on the roof after the house got too hot. When we first moved to Tucson it stormed every afternoon during monsoon season. 

Nonsoon? I don't know. We finally got a couple of monsoon storms, but by mid-morning the ground is bone dry. My poor plants! Unfortunately, we had to take out our pest-infested eucalyptus tree, so our "desert adapted" heritage fruit trees have no protection from the scorching sun. I finally put a shade contraption over our little fig tree.

But despite getting up at 5:30 am and cooling it off with a can of water (not to mention regular deep watering), it just withered away. Keep in mind that it also gets greywater from our outdoor washing machine. But we had the dilemma of when to wash our cloths - since it never got below 80 degrees while we were still awake. We finally started the laundry just before bed anyway. (We were out of underwear...) 

You'll be happy to hear we had better luck in our front yard. We've been fortunate to go as long we did without using city water. Our rain basins had sunk in enough water to keep them going.

The jujubes are thriving in their basin. Apparently jujubes are very drought tolerant. Perhaps it's their shiny leaves. I just wanted to make sure they had plenty of water to promote fruit growth.

Sadly, I waited too long to deep water the moringa in our right-of-way basin. They are tropical plants that should take the heat, but without enough moisture they were really suffering. The recent monsoon rain (and some deep-watering) has done wonders. They are coming back with some new sprouts. 

Most of our desert plants are hanging in there. I finally had to give a little water to the pricky pear and agave. All of the desert trees (mesquite, sweet acacia, and hackberry) fared well on the high end of the shallow basin. Since the two monsoon storms they are really flourishing. Have I mentioned I #lovemyrainbasin yet? 

The mesquite tree acted as a nurse plant protecting the hackberry and saguaro cactus from the sun as well as providing nitrogen to the soil. I went ahead and picked some volunteer mesquites that were sprouting under it.  

And after two storms and some sprinkles, life is springing up in the basins! I found tepary beans (from last year) sprouting under the jujube tree. It is odiously tepary bean season, so I went ahead and planted more for ground cover in the garden.

Horse purslane is starting to pop up too - a welcome sign that monsoon season is here. It will act as living mulch and add much needed organic matter to the basin!  

We are enjoying the common purslane that I propagated in our yard! (That cage kept the critters out long enough for the purslane to spread and grow).

Celebrating the (late) start of monsoon season with a purslane scramble breakfast burrito. I think we deserve it for surviving the nonsoon!  (So far.)  I think we will be O.K. That big storm pretty much filled up our rain barrels. Hopefully there will be enough water to get us through the rest of the nonsoon. 

Reporter shares my passion for rainwater basins

Anyone who has followed my blog for a while knows how passionate I am about our rainwater harvesting catchment basins. I've been known to share the benefits with anyone who strolls by our yard. I even started a #lovemyrainbasin campaign to promote them. 

If you're looking for a way to conserve water, putting in catchment basins to water native plants is one of the most effective and affordable things you can do. Sure, covering your yard with gravel and drought tolerant cactus and agaves saves water, too. But there are more productive uses for that space that actually enhance our desert environment. With a little love and care, you can create a shady habitat to enjoy the frolicking birds or glean delicious food from your own edible forest.

I recently had the opportunity to share my basins with Clara Migoya, a reporter with the Arizona Republic, who had read about our campaign. 

Spurred on by the water crisis, a few reporters have done mini-stories on our rainwater harvesting features. While I excitedly pointed out the benefits of our basins, they inevitably zoomed in on our rain tanks. So it was refreshing chatting with an environmental reporter who seemed genuinely interested. 

After the usual interview questions, I showed off how our gutters and downspout direct rain into the long basin that nourishes our three jujube trees (Chinese fruit trees). I explained how Dan had to remove a hedge of ugly, aging oleanders before digging the basin and planting the saplings. The tree on the far end grew four times faster than the two that were planted where the oleander had poisoned the soil. Clara snapped pictures as I pointed out how the native grasses slowed down the water, keeping it from washing away the mulch and organic matter. The roots of those grasses also allowed the water to sink in and helped build healthy soil. The basins soaked in so much rainwater, that I haven't had to water the jujube trees this spring. And the two smaller trees have grown nearly as big as the tallest tree! 

The next stop was the right of way basin. Dan rooted out the bermuda grass that had taken over the area, and dug basins around higher mounds where we planted moringa seeds and a wolfberry plant. He filled the basin with woodchip mulch (that has since broken down into soil). And we planted native bunch grass to help the water infiltrate and prevent erosion. Along with the mulch and other organic matter, it creates a sponge to hold the moisture longer.

Three moringa trees, a wolfberry, Mexican honeysuckle, a volunteer desert broom and some wild flowers provide sustenance for a variety of pollinators. We harvest the moringa leaves to add nutrition to various dishes and dry them to make a healthy tea. 

The moringa trees die every winter during a hard freeze. But they come back from the roots in the spring. Native grasses really did their job here. So much water sunk in from the rainy season that we haven't had to water them so far. During a rainstorm the water will continue sinking in long after our 500 gallon cistern is full. Here I'm demonstrating how high the moringa grow during one monsoon season. That means the roots under the surface must be that long as well.   

I pointed out a good angle to shoot our mesquite guild with the slimline rain tanks in the background. Noticing the Audubon's HABITAT AT HOME sign, Clara asked what makes it a habitat. I was happy to point out the native plants in the mesquite guild that provide food and shelter for birds, pollinators, and other desert critters.  

The mesquite tree provides shade and nitrogen to the desert hackberry and our cactus garden. It acts as a "nurse plant" to protect a young saguaro cactus from the harsh desert sun.

You might be asking, "Where is the basin?" Dan built a berm to direct roof water away from the foundation of the house and into a shallow basin. The desert plants were placed on the high end of that basin. I remember when Dan brought home his scrawny "Charlie Brown mesquite tree." Now it is thriving! 

A gravel path separates the other side of the front yard basin where we have planted a native acacia and another variety of hackberry. Birds enjoy shade from these trees as they peck for seeds from volunteer wildflowers and native grasses. A sign proudly proclaims: PLANTS FOR BIRDS. 

No tour of our yard is complete without a stop at our little garden. The garden is watered with rainwater collected in our rain tanks. Yes, I appreciate them, too. The catchment basins conserve water leaving more in the rain tanks to irrigate our garden! 

What a lovely way to spend the afternoon - discussing a shared interest with an inquisitive environmental reporter (and my son Jeremy who took the pictures of us.)  

Clara and I searching for worms in the compost pit

Wanna help promote rainwater harvesting basins?  Share a pic of your favorite basin on your social media pages. Add the hashtag #lovemyrainbasin 

 If you don't have a basin, you can still help out by "liking" or commenting on other people's posts. 


READ CLARA'S ARTICLE (in the Arizona Republic): 

It's free, it's drinkable. Why don't more Arizonans harvest rainwater during a drought?