Konstantinos Karoubas

pollinator
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since Mar 20, 2012
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Recent posts by Konstantinos Karoubas



Greetings,

We’re almost finished making our clay balls and clay tubes, and now it’s time to evaluate our process.

First, we wanted to confirm that the seeds we’re using are viable. We tested them with the wet paper towel method, and both the alfalfa and the barley germinated well.

Next, we’re checking the condition of the clay tubes we’ve made. To do this, we place a damp paper towel in a pan, set the clay tubes or clay balls on top, and let them absorb water. If everything is working properly, seedlings will begin to sprout, and so far, the results look promising.

The next step is to wait for the rains—ideally 5 to 10 days of cool, steady weather, which usually arrives in late November or December. That’s when we’ll scatter the clay balls.

The larger clay cubes will be spread across areas of almost bare soil. These cubes are enriched with compost or manure, as well as zeolite for better water retention. Some also contain chopped straw. We’re curious to see how these variations perform.

Our ultimate goal remains the same: to establish alfalfa and maintain year-round soil cover.

Kostas
5 days ago
Greetings to all !!!



Restoring Land in the Mediterranean Region,

Our project aims to restore vacant lands and farms in Greece by planting perennial, nitrogen-fixing grasses and shrubs. By keeping the ground covered in green throughout the long, hot summers, we will lower soil temperatures, protect vital soil organisms, and enhance the health of the land.

This initiative focuses on several key benefits:

Improving soil health: The chosen plants will enrich the soil by fixing nitrogen and depositing organic matter.

Sequestering carbon: By establishing a continuous plant cover, we will help capture and store atmospheric carbon.

Attracting moisture: Keeping the ground covered will attract and retain moisture, which can help support local rainfall patterns.

Our pilot project will focus on two key plants known for their resilience and benefits: alfalfa and sainfoin.

We are creating and scattering special seed balls, or "clay cubes," made from a mixture of:

Clay (5 parts)
Compost (3 parts)
Zeolite (1 part)
Seeds (1/4 part)

These cubes will be scattered across the land in late November or early December, timed to coincide with at least five continuous days of rain. This will allow the seeds to germinate under ideal conditions without the need for tilling the soil.

For comparison, we will also plant seeds in the traditional manner by disturbing the soil. This will help us evaluate the effectiveness of the clay cube method versus conventional planting.

We understand that different soil types and locations will react differently, so we plan to conduct trials in Northern Greece, Southern Greece, and on the Greek Islands.

We are prepared for this to be a multi-year effort, and we are optimistic about the long-term success of this regenerative approach.

Kostas
2 weeks ago
Project Update: Forest Rejuvenation After Fire in Thessaloniki

This is an update on a small, project we've been conducting.

In late summer 2021, a fire broke out near Thessaloniki at the State Park, predominantly covered by pine trees. Fortunately, the fire was contained, affecting only a small area of approximately 50,000 square meters.

Our project's primary objective was to observe the fire's impact on the soil and its subsequent suitability for future land use. We know that pine forests typically lead to acidic soil, which restricts the growth of many other trees, shrubs, and grasses.

Our central question was: Does the soil remain acidic after a fire, or does its quality improve?

Immediately following the fire, we initiated our experiment. We sparsely planted a few seeds, including almonds, a couple of oak acorns, and plum seeds. We also scattered small seeds like arugula, Swiss chard, and a few others, eager to see what would happen.

The following year, we expanded our efforts by planting more seeds, specifically various types of common oak and holm oak acorns.

As demonstrated in the video, our observations show that the soil in the burnt area became remarkably rich and fertile after the fire. The planted almond trees exhibit amazing growth, and the holm oaks are also thriving.

Based on this small project, we've concluded that the period immediately following a forest fire presents a significant opportunity to plant diverse seeds of trees and other vegetation. This can help create a healthy, multidimensional forest that is better equipped to adapt to the changing climate and the anticipated lack of rain in the future.

This project also raises a broader discussion: the potential for using controlled fires to manage pine forests that are at risk or dying from disease and drought.

By strategically burning these areas, we can then be prepared to plant a wide variety of resilient seeds, fostering forests that are more sustainable and adaptable to future environmental challenges.

kostas

3 months ago
a different climate zone

Not time zone stated above {sorry}

Kostas
4 months ago
Update April 15 2025 Young Oak Trees Thessaloniki

These were the first acorns we planted near Thessaloniki.

Two or three years old now, growing strong among the pine trees and nestled in a bed of needles.

The pine forest near Thessaloniki is on borrowed time. Either fire or disease will destroy them.

It would be prudent if we started an intensive acorn planting project.

Unfortunately we don't have blue jays around here doing the planting for us.

-------------

It seems that pine trees and young oak trees may share a symbiotic relationship.

The young oaks appear to thrive beneath the pines, and it’s possible that the pines help provide them with water and other resources essential for survival.

In southern Greece, near Sparta, we planted a few acorns in the winter of 2023, placing some beneath pine trees.

Remarkably, despite the summer of 2024 being one of the hottest and driest we’ve ever seen, those young oaks planted under the pines all survived.

This suggests that there may indeed be a beneficial interaction between the two species.

This year, we also visited the islands of Crete and Rhodes, which lie further south and may even be in a different time zone.

While there, we planted a few acorns to see how they would fare in the local climate.

We’ll provide updates on their progress once we have more information.

The first report, expected in June or July, will indicate whether the acorns have sprouted. A second report will follow in January to assess their condition, with a final update planned for spring 2026.


Kostas


4 months ago
Greetings to all,

We’re currently working on our community Food Forest project. If you look back at one of our earlier videos, you'll see that the land is divided into two distinct sections. The northern part is mostly bare, while the southern part has patches of organic matter and some grass cover. However, both the northern and eastern edges remain largely exposed, with bare soil.

See


We’ve started planting trees—some from bare roots and others from seeds—but we're concerned that their growth will be slow due to the soil's low organic matter content.

We’re facing several limitations in addressing this issue. We don’t have access to tractors or mechanical tools to sow ground cover or green manure crops. On top of that, this site is far from our main farm, which makes transporting materials like clay seed balls a logistical challenge.

Because of these constraints, we’re exploring a more straightforward method: directly scattering seeds on the soil’s surface. I’ve never tried this before, and I don’t know many people locally who have either—so we’re entering uncharted territory.

There are, of course, challenges with this method.

The first issue is ants. Ants are a formidable force. If you scatter seeds on the ground during summer, they’ll quickly haul them away. Through observation, however, we’ve learned that ant activity significantly decreases in December, January, and early February. They essentially go into hibernation during this time, at least in our region. This might not apply everywhere—places like Northern Africa or Mexico may not see the same pattern—but here, it's a window of opportunity.

Another helpful discovery involves seeds like vetch. Ants struggle to carry vetch seeds because they're round and smooth, making them hard to grip. This makes vetch ideal for fall planting. It also produces a lot of organic matter and fixes nitrogen, which is essential for improving our soil.

Birds present another challenge. Imagine scattering 20 kg of barley, only for a flock of birds to feast on it in a matter of hours. Timing is everything—if you sow seeds in December, when most local farmers are planting too, there’s a better chance that birds will be distracted by other fields. That’s what happened this year, and we got lucky.

Weather can also work against us. Heavy rain can wash seeds away. Strong winds might blow them off the surface. Another scenario: seeds sprout after a few days of rain, but then the sun comes out, temperatures spike, and the young roots dry up before they reach moisture deep in the soil.

Despite all these challenges, with smart planning—and a bit of luck—we believe we can establish ground cover crops that will protect and nourish the soil.

Persistence is key. Take advantage of every rainy spell to scatter seeds—success comes through repeated sowing.

Knowing which plants can take root on bare soil is crucial, and this will vary by region. For us, barley was the first test crop. We chose it because we’d noticed wheat left behind on the ground surface, after harvest, often sprouted in the fall rains. So, in early December, while others were plowing and planting their winter grains, we began scattering barley. We continued through the rainy spells of December, January, and February. The barley we used was animal feed grade, so it was relatively inexpensive. And it worked—just a week of cold, rainy weather was enough for it to take root and begin establishing.

Mustard seeds have also performed very well. They grow like weeds in our region—which, in this case, is exactly what we want.

We’re now testing other fast-sprouting, fast-rooting plants like arugula, Mediterranean hartwort, sorghum-sudangrass, chia, millet and flax seeds. The goal is to identify species that not only grow quickly but thrive in our specific conditions.

In areas that already have some ground cover—even if it’s just grass or invasive Bermuda grass—simply scattering vetch or field peas can yield good results.

Long-term, plants like alfalfa and sainfoin that stay green through the summer are especially valuable. Alfalfa, in particular, is our top priority.

Once we manage to establish even a light ground cover, we can come back the following year and scatter more beneficial plants like vetch and peas.

This method—of growing on bare soil—has huge potential. It could be used after wildfires to prevent erosion, with seeds scattered by drones, helicopters, or volunteers.

It also opens up a path to restoring marginal lands and making them productive again.

Planting alfalfa and similar crops can help cool the planet and capture carbon. Monoculture tree crops like olives, grapes, and almonds thrive best with permanent green cover beneath them—alfalfa is an ideal choice.

As the wise and beautiful Wangari Maathai from Kenya once said, the Earth is a beautiful lady who loves to be dressed in green.

If we can establish this simply by scattering seed, it’ll save time and resources. It’s easy enough to broadcast vetch, field peas, and other cover crops directly into an existing alfalfa base.

Watching these plants grow on the Community Food Forest, has been rewarding.

We’ll be observing closely through spring, summer, and the seasons ahead to see how it all unfolds.

Whether this project succeeds or not remains to be seen.

But despite the obstacles, it's an effort worth making—the potential rewards are substantial.

Kostas
4 months ago
This is an update.

We started planting seeds at this site south of Thessaloniki 11 years ago.

In one spot where we had the right conditions, rich soil, and full sun, the almonds trees have fully grown and are producing almonds.

Most of the land however is unsuitable for the prunus family trees.

In addition the pine trees, like weeds have overtaken the land.

We are currently planting acorns in between the pine trees and the rest of the site,

Its interesting to see the cactus doing so well at the southern side.
It maybe useful in reforesting areas close to the deserts.



Kostas
5 months ago
Greetings to all.

We are working on improving the soil in the community food forest project.

This project will force us to find ways to keep our soil covered all summer long with
plants that hopefully fix nitrogen and improve the soil with organic matter.

It's a difficult if not impossible situation.

If anyone has any ideas....

If a solution is found, it's applications are many and benefits impactful.



Kostas
6 months ago
Congratulations Eric,

I imagine your delight in seeing this tree emerge.

I hope you will experience this many many times in the future !!!

Kostas
6 months ago