Greenhouse & Garden Updates: Seedling Progress, Transplants, and Care Tips - GB - Quiz

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Winter: 2026

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Greenhouse & Garden Updates:

Welcome back to the blog! I am thrilled to share a new update on how everything is growing in our greenhouse and garden. Today, we will take a photo-by-photo tour, detailing step-by-step techniques, propagation tips, and technical care for each plant.



1. Photo 1: Alfalfa Seedlings (Medicago sativa)




In the first picture, we can see the alfalfa seedlings sprouting in the seed tray. Alfalfa is a fast-growing legume known for fixing atmospheric nitrogen into the soil through its symbiotic relationship with Rhizobium bacteria.



2. Step-by-step for transplanting to larger pots:


3. When to transplant:

Perform the transplant when seedlings reach 8–10 cm in height and have developed 3 to 4 true leaves (beyond the initial cotyledons).




4. Substrate preparation:

Prepare a light, loose, and well-draining soil mix (compost, topsoil, and perlite).



5. Extraction:

Water the tray lightly a few hours prior so the root ball slides out easily without damaging the taproot.




6. Potting:

Move to individual pots (1–2 liters), placing the seedling at the same soil depth as before.




7. Aftercare:

Water gently to settle the soil and place in partial shade for 48 hours before exposing to full sun.





Video Note: As seen in the video update, snails had eaten some leaves, so pest control and protective covers will be used.

1. Photo 2: Cherry Tree Seedling (Prunus avium)

Here is a thriving cherry seedling germinated via cold stratification in the refrigerator. Stone fruit seeds require a cold period (2 °C to 6 °C) for 60 to 90 days in a moist medium to break seed dormancy.



2. Step-by-step for future potting up:


3. Best Season & Timing:

Transplant in late winter or early spring before active spring growth begins. The sapling should be around 15–20 cm tall with a semi-woody stem.



4. Pot Selection:

Move from the current container into a 10 to 15-liter pot equipped with proper drainage holes and a gravel base.



5. Root Handling:

Keep the root ball intact to protect the main taproot.



6. Soil Mixture:

Use an organic-rich substrate (compost, worm castings) combined with perlite for aeration.



7. Location:

Transition to outdoor full sun gradually to strengthen the stem structure.

Interactive image viewer: Cherry seedling

Filter intensity:

1. Photo 3: Clivia miniata in Bloom

The third photo features a gorgeous blooming Clivia miniata, showcasing bright orange trumpet-shaped flowers with yellow centers. This shade-loving perennial thrives in indirect light. Technical Tip: To encourage rich blooming, Clivia requires a cool winter rest period (around 10 °C) with significantly reduced watering.

1. Photo 4: "Ever-bearing" Lemon Tree (Citrus × limon) from Seed

The fourth image shows a lemon tree grown from seeds sourced from my neighbor's "four seasons" lemon tree. About 20 days ago, I transplanted it into a rich organic substrate blend that I also prepared for my neighbor (whose lemon trees grew like crazy with it!). We will monitor its progress closely. Citrus Care: Citrus plants love organic matter and iron-rich nutrients. A porous organic soil mix ensures rapid root growth without root rot.

1. Photo 5: Rose Cuttings (Rosa spp.)

In this photo and the greenhouse video, we see rose cuttings taken from my grandmother's garden (featuring a fragrant multi-petaled white rose and a multi-color red/orange/yellow variety). They are planted in a mixture of sand, worm castings, and peat moss under protective domes.



2. Greenhouse Experience & Adjustments:

A few days ago, leaving the greenhouse closed with un-covered plants caused some delicate young rose shoots to dry out due to excess heat buildup. Takeaway: It is best to keep the cutting pots in the shaded area of the greenhouse and keep them covered under plastic domes to maintain high humidity until strong roots develop.



3. Step-by-step for final transplantation:

Late winter or early autumn of the following season, giving the cuttings several months to build a sturdy root network.



4. Comprobación:

Confirmar que las raíces asoman por los orificios inferiores o que el esqueje presente resistencia al tirar suavemente.



5. Checking Readiness:

Ensure roots are visible at the bottom of the pot or that the cutting holds firm when gently pulled.



6. Final Potting:

Carefully separate rooted cuttings and plant each into a 10-liter pot or directly into the garden bed.



7. Soil & Care:

Use fertile, well-draining soil. Prune for shape and place in full sunlight.

📸 Rooting process log

First Photo

Alfalfa crops

Seedlings growing.

2nd Photo: Cherry seedling

Under glass

To allow it to develop

3rd photo: Clivia miniata

In the midst of

Bloom

4th Photo: Lemon tree

From lemon seeds

Four Seasons of My Neighbor

5th Photo: Cuttings

Of rosebushes

Sprouted

🌱 Garden & Greenhouse Quiz

Test your knowledge on seedling care, propagation, and transplanting!

1. When is the ideal time to transplant Alfalfa seedlings into larger pots?

2. What is cold stratification for Cherry tree seeds?

3. What winter condition promotes rich blooming in Clivia miniata?

4. Why did some young rose cutting shoots dry out in the greenhouse?

5. When should rooted rose cuttings be moved to their final 10-liter pots?

¡Best regards and happy growing.!

Thank you for reading! I will keep posting more updates and guides in English and Spanish. See you in the next post! Best regards.

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