European Phenology Campaign

Autumn 2025

2025-12-01T15:24:49Z

Greetings from OŠ Lučko, Zagreb!
This is our Green Down Data.

Autumn 2025

2025-10-27T10:24:15Z

Greetings from Lučko Elementary School, Zagreb, Croatia! We are
observing the linden tree (Tilia cordata). On October 27, 2025, the
leaves on our linden tree changed color. These are our results:
1.5GY7/12 2.2.5G8/12 3.2.5G
8/12 4. 2.5G 8/6 The air temperature is
11C. Greetings from Zagreb!

Autumn 2025

2025-10-10T19:54:37Z

Hello from OŠ Lučko, Zagreb, Croatia! We are going to observe a linden
tree (Tilia cordata). On 10th October 2025, the leaves on our linden
were still green and all leaves are 5GY:4/8. Air temperature is
20°C. Best regards
from Zagreb!

Spring 2025

2025-05-21T05:40:39Z

Greetings from OŠ Lučko, Zagreb!
The leaves have reached full size.
This is our Green Up Data.

Spring 2025

2025-05-14T11:55:58Z

Hello!
Today's temperature is 23°C.
These are our measurements for Tilia cordata-sitnolisna lipa:
leaf 1- 83 mm, leaf 2- 77 mm, leaf 3- 74 mm, leaf 4- 74 mm.

Greetings from Elementary School Lučko, Zagreb, Croatia!

Spring 2025

2025-04-16T12:33:59Z

Hello!
Today's temperature is 23°C.
These are our measurements for Tilia cordata-sitnolisna lipa:
Leaf 1- 51 mm, leaf 2- 75 mm, leaf 3- 45 mm, leaf 4- 56 mm.

Greetings from Elementary School Lučko, Zagreb, Croatia!

Spring 2025

2025-03-10T13:18:43Z

Hello!
Today's temperature is 13°C. We will be observing Tilia cordata-sitnolisna lipa.
Latitude 45.7612
Longitude 15.8763
Greetings from Elementary School Lučko, Zagreb, Croatia!

Autumn 2024- Activity 3

2024-11-13T17:24:21Z

Greetings from OŠ Lučko, Zagreb!
This is our Green Down Data.

Autumn 2024

2024-11-04T13:45:31Z

Greetings from OŠ Lučko, Zagreb!
The leaves on the linden tree change color:
1. leaf: 5GY:4/8; 2. leaf: 5GY:4/8; 3. leaf: 5GY:6/10; 4. leaf: 5GY:6/10
The air temperature is 12 degrees.

Autumn 2024

2024-10-21T15:26:17Z

Greetings from Zagreb!
The leaves on the linden tree change color:
1. leaf: 5GY:4/8; 2. leaf: 5GY:4/8; 3. leaf: 5GY:5/10; 4. leaf: 5GY:7/12
The air temperature is 15 degrees.

Autumn 2024

2024-10-06T11:47:23Z

Hello from Lučko Primary School, Zagreb, Croatia!
We ar going to observe a linden tree (Tilia cordata). On 4th October 2024, the leaves on our linden were still green. Students observed and noted that all leaves are 5GY:4/8.
Best regards from Zagreb!

Spring 2020-Activity 1-Our Fig and Birch

2020-03-06T18:11:27Z

Hello!
Greetings from Jastrebarsko!

Autumn 2019-Activity 3

2019-12-08T19:20:17Z

Hello!
These are measurements of our birch and fig tree.
Greetings from Croatia!

Task 2-Fig

2019-11-29T13:37:52Z

Hello!
Here are pictures of our measurements and measurements of our partner school Gozo Colledge.
We can notice that colours of the leaves are the same until 17.10.2019. and after that they are different.
Our Fig suddenly lost leaves after strong wind and low temperature.
Greetings from Croatia!

Task 2-Birch

2019-11-29T13:18:54Z

Hello!
Here are pictures of our Birch.
Greetings from Croatia!

Autumn 2019.

2019-11-11T14:39:50Z

Hello!
Here are pictures of our Fig and Birch.
Greetings from Croatia!

Task 2-Birch and Fig

2019-10-22T09:29:33Z

Hello from Croatia!
Here are the pictures of our Birch and Fig.
Best regards,
Ivka

Our Fig-Task 1, 2

2019-10-01T06:53:17Z

The air temperature is 25 degrees. The leaves of our tree are still green.
Greetings from Croatia!

Autumn 2019-Task 2

2019-10-01T06:48:48Z

Hello!
This is our Birch on 30.9.2019. The air temperature is 25 degrees. The leaves of our tree are still green but they are beginning to change color.

Greetings from Croatia!

Autumn 2019-Task 1

2019-09-15T10:24:16Z

Hello!
My students observed a birch (Betula pendula) tree near the school during spring 2019 and we will continue to observe it now in Autumn Phenology Campaign. Leafs are 5GY:5/10.
We've observe a Syringa (Syringa vulgaris) on second location.Leafs are 5GY:5/10.
These are the location of our trees:
Birch Syringa
Latitude: 45.457567    N                                   Latitude: 45.66525 N
Longitude. 17.761835 E                                   Longitude: 15.64731 E
elevation: 76.8 m                                              elevation:  76.8 m
Greetings from Croatia!