A preschool garden works as a classroom when it is planned around the local seasons, uses fast-growing plants children can eat or smell, gives every child regular jobs such as watering, checking and harvesting, and is linked to questions in the classroom. In a tropical city like Ho Chi Minh City, that means planting most crops at the start of the rainy season, using raised beds and containers to cope with downpours and heat, and choosing leafy greens, herbs and beans that show visible change within days.
The Global Nexus curriculum names the garden and the kitchen as classrooms in their own right. A garden does not need to be large. A row of planters along a wall, a few pots on a balcony or a small bed in the corner of the courtyard can support a year of investigation. What it needs is a plan, a routine and adults who see it as a place for learning rather than decoration. This guide is written for teachers and curriculum leads who want to build that plan.
Why gardens teach so much
A garden is one of the few places in a child's life where cause and effect play out slowly enough to observe. Water a seed and it sprouts; forget to water it and it wilts; plant it in the shade and it grows tall and pale. Children see these patterns over days and weeks, and they begin to form theories about what plants need. That is early scientific thinking in its most natural form.
Gardens also build responsibility and patience. A plant depends on the children, and they know it. A child who has watered the same pot of basil every morning for three weeks has a relationship with it that no worksheet can replicate. The moment of harvest, when children pick leaves they grew and eat them at lunch, is often one of the most memorable moments of the school year.
For a bilingual classroom, the garden offers a rich and concrete vocabulary: seeds, roots, stems, leaves, soil, water, sun, shade, grow, dig, pick and taste, in both languages. These words are learned through use, not repetition, and children carry them into their play and conversation. The garden also connects children to Vietnamese food culture, since many of the herbs and greens they grow appear in the dishes they eat at home.
For curriculum planning, a garden serves almost every developmental area at once. Digging and carrying water build physical strength and coordination; observing and comparing plants build thinking; describing and reporting build language; shared care builds social and emotional skills; and the colours, textures and smells feed creative work. When a team maps its garden routines against the six Global Nexus dimensions and the national programme, the garden stops looking like an extra and starts looking like what it is: one of the most efficient classrooms in the school.
Working with the seasons in Ho Chi Minh City
Ho Chi Minh City has a tropical climate with two broad seasons: a dry season, roughly from December to April, and a rainy season, roughly from May to November. Temperatures stay warm all year, so the main variables for a garden are water and sun rather than cold. That shapes the planting calendar in ways that differ from the temperate-climate gardening guides many international teachers know.
The start of the rainy season is usually the easiest time to sow. Rain provides water, temperatures are high and plants grow quickly. However, heavy downpours can wash seeds out of the soil and flatten young seedlings. Raised beds, containers with good drainage and a light cover for seedlings during storms help a great deal. Avoid low spots where water pools after rain, as standing water also attracts mosquitoes.
The dry season needs more care. Plants need regular watering, and the midday sun can be intense. Shade cloth, mulch and morning watering routines help, and the dry season is a good time to grow sun-loving herbs and to focus on composting, seed saving and indoor sprouting. Teams should plan the garden year around these rhythms rather than trying to grow the same things all year.
Choosing plants children can grow and use
The best plants for a preschool garden grow quickly, are safe to touch and taste, and can be used in the kitchen or classroom. In Ho Chi Minh City, many familiar Vietnamese greens and herbs fit well. Always check that every plant is safe before introducing it, and avoid plants with toxic leaves, berries or sap.
| Plant | Why it suits young children | What children can do |
|---|---|---|
| Water spinach (rau muống) | Grows very fast from cuttings or seed; familiar from home meals | Plant cuttings in water or soil, measure growth, harvest for lunch |
| Mung bean sprouts | Sprout in days indoors, no garden needed | Soak, rinse daily, observe roots and shoots |
| Basil and Vietnamese herbs | Strong smells, easy to grow in pots | Smell, compare leaves, pick for spring rolls |
| Lemongrass | Hardy, tolerant of heat, interesting texture | Plant stalks, watch new shoots, smell and use in cooking |
| Long beans and okra | Climb or grow tall, visible flowers and pods | Build supports, count pods, observe flowers becoming pods |
| Sweet potato | Grows from a tuber or cutting, edible leaves | Grow in water first, then soil; dig for tubers later |
Start with three or four plants rather than a large variety. A small number of well-tended plants gives children a clearer experience than a crowded garden where nothing thrives. Add new plants as children gain confidence and ask questions.
Containers, raised beds and small spaces
Many preschools in Ho Chi Minh City have limited outdoor space, often a small courtyard, a rooftop or a narrow strip along a wall. That is enough. Containers, recycled buckets, troughs and raised wooden planters can host a productive garden in a few square metres. Raised beds at child height make it easier for children to see and reach the plants without trampling them.
Containers have other advantages. They can be moved into shade during the hottest months or sheltered during heavy storms. They drain well if they have holes in the bottom, and they let teams experiment, for example by growing the same plant in different soils or locations and comparing the results. Children can take turns caring for particular containers, which gives each child ownership of something specific.
Make sure containers are stable and cannot tip over, that soil is safe and clean, and that the garden area has a water source children can reach with small watering cans. A clear path around the plants, marked by stones or a low edge, helps children understand where they may walk.
Giving every child a role
A garden works best as a classroom when every child has regular, real responsibilities. A simple rota can assign daily jobs: checking the soil, watering, looking for insects, recording growth with photographs or drawings, and reporting to the group at morning circle. Jobs rotate weekly so every child does each one.
Younger children can water with small cans, dig with hand trowels and fill pots with soil. Older children can plant seeds at the right depth, measure plants with a strip of paper or a ruler, compare growth in different conditions and help prepare the harvest. All children can observe, smell, touch and talk about what they see.
Recording growth is an important part of the work. A garden journal with dated drawings and photographs, kept in the classroom, lets children see change over time and helps them notice patterns. Teachers can prompt reflection with questions such as: which plant grew fastest, and why do you think so? What happened to the plants after the big rain last week?
A sample sequence: water spinach over three weeks
Water spinach is one of the most rewarding crops for a first garden project because it grows fast and children recognise it from family meals. In the first week, the teacher brings a bunch from the market and the children examine it: the hollow stems, the shape of the leaves, the smell. They notice that some stems have small roots. The group decides to try growing new plants from the cut stems, some in jars of water and some in a planter of soil.
Each morning, the children on the watering rota check the jars and the planter, and another child records what they see with a drawing or a photograph taken with the teacher. Within a few days, new roots appear in the jars, and children are astonished to see how fast they grow. In the second week they compare the jars with the soil planter and discuss which plants are growing faster and why. One child suggests moving a jar into the sun to see what happens.
By the third week, the plants in the soil have new leaves. The children harvest some, wash them, and give them to the school cook to add to lunch, or use them in a cooking session. The garden journal now shows three weeks of change, and the children's explanations of what plants need are noticeably richer than on the first day.
Composting, insects and the wider ecosystem
A garden is a small ecosystem, and composting is one of the best ways to show children how it works. A simple compost bin or worm farm, fed with fruit and vegetable scraps from the school kitchen, turns waste into soil over a few weeks. Children can add scraps, turn the compost, look for worms and see the difference between fresh scraps and finished compost. That makes the cycle of growth and decay visible.
Insects are part of the garden too. Children will find ants, caterpillars, ladybirds, snails and occasionally less welcome visitors. Teach children to observe insects without harming them, to use magnifying glasses, and to wash their hands after gardening. Teachers should check the garden regularly for stinging insects, ant nests near paths and standing water where mosquitoes could breed, and remove hazards promptly.
Some plants will be eaten by insects before the children can harvest them. That is a learning opportunity, not a failure. Children can investigate who has been eating the leaves, consider how to protect the plants without chemicals, and decide together whether to share some of the garden with the caterpillars.
From garden to classroom and kitchen
A garden becomes part of the curriculum when it connects to what happens indoors. Harvested herbs can go into spring rolls made in a cooking session; leaves can be used for printing in the art area; seeds can be counted, sorted and compared at the maths table; and children's questions about plants can become weekly projects. The garden can also anchor monthly themes such as food, growth or seasons.
Sharing the garden with families extends its reach. Children can take home cuttings of water spinach or sweet potato to grow at home, families can contribute seeds or plants from their own gardens, and grandparents with gardening knowledge can be invited to share it. These connections show children that the garden is part of a wider community of growing.
Finally, review the garden as a team each season. Which plants worked? Which jobs did children enjoy? What changes are needed for the coming season? Keep notes in the planning archive, so the garden improves year after year. More on how the Global Nexus curriculum uses the garden and the kitchen as classrooms can be found elsewhere in this section.
Câu hỏi thường gặp
How much space does a preschool garden need?
Very little. A few containers or raised planters along a wall, on a balcony or on a rooftop can support a productive garden. What matters more is regular access, a water source, some sun and a routine that gives children real responsibilities. Many successful school gardens start with three or four large pots.
When is the best time to start a garden in Ho Chi Minh City?
The start of the rainy season, roughly in May, is usually the easiest time to sow, since rain and warmth help plants grow quickly. Protect seedlings from heavy downpours with raised beds and good drainage. The dry season needs more watering and shade but suits herbs, composting and indoor sprouting.
Is gardening safe for young children?
Gardening is safe when the plants are chosen carefully, tools are suitable for small hands, soil is clean, and children wash their hands afterwards. Teachers should check the garden for stinging insects, standing water and any plants that could be harmful, and supervise children while they dig, water and harvest.
What if the plants die?
Plants sometimes die from too much water, too little sun, insects or neglect. Treat it as a question to investigate with the children rather than a failure. Asking why the plant died and what could be done differently next time is valuable scientific thinking, and replanting gives children a second chance to apply what they learned.
How do we keep the garden going during school holidays?
Plan in advance: choose hardy plants before long breaks, use mulch and self-watering containers, and arrange for staff or volunteer families to water during holidays. Some schools plant less before Tet and the summer break and focus on composting and seed saving instead.
Can children eat what they grow at school?
Yes, if the plants are safe, the soil is clean and the harvest is washed and prepared hygienically, following the school's food safety rules. Eating what they grew is one of the most powerful parts of the experience for children, and many become more willing to try vegetables they helped grow.