Your First Five Pots: What to Buy on Day One

Buy five containers on your first trip, in mixed sizes: two large, two medium, one shallow. Not twenty, not one. Five is enough to grow real food across three different rooting depths, and small enough that if the space turns out to be wrong, you have not filled a rooftop with containers you now have to move.

That is the whole recommendation. The rest of this guide is the reasoning behind it, and the four checks worth making on any container before you hand over money.

What five containers actually buys you

A first season on a rooftop or balcony is a test, whether you intend it that way or not. You are finding out how much direct sun that corner really gets, how quickly things dry out there in the hot months, whether the spot floods when the monsoon settles in, and how much watering you can realistically keep up with once the novelty has worn off.

Five containers is enough to run that test properly:

• Two large containers carry the plants most people actually start for: a chilli plant, a brinjal, a tomato in the cool season. These need real root room and they are the ones that fail visibly in a pot that is too small.
• Two medium containers cover the middle: beans, smaller leafy crops, herbs that will be picked often.
• One shallow, wide container covers fast leafy greens, which have shallow roots, spread sideways rather than down, and give you something to eat within weeks rather than months.

That mix also spreads your risk across the space. Put them in slightly different positions and by the end of one season you will know which part of your roof or balcony is the good part. That is worth more than ten identical pots in one row, all doing equally badly.

The other reason to stop at five is straightforward. Every container you own is a container you have to water, and on a rooftop with no tap that means carrying. Twenty containers is a daily commitment before you have any idea whether you enjoy this. Five is a routine you can sustain while you find out. If you have not yet worked out where your water is coming from, sort that out first: watering a roof garden when there is no tap up there covers the logistics honestly.

The four checks to make before you buy any container

Nurseries and hardware shops sell containers for how they look on a shelf. You are buying for how they perform in direct tropical sun with a plant in them. Four things decide that, and you can check all four standing in the shop.

1. Depth, which matters more than width

Root depth is the constraint most beginners get wrong, because a wide shallow pot looks bigger than a narrow deep one and holds less of what a plant actually needs. Leafy greens are genuinely fine in something shallow. A fruiting plant is not. A brinjal or chilli in a pot too shallow for its roots does not die dramatically; it just stays small, flowers weakly, and produces almost nothing, which is much harder to diagnose than an outright failure.

Buy for the deepest thing you plan to grow in that container, not the plant you happen to have in your hand at the shop.

2. Drainage holes that already exist

Water has to leave the container. In a climate where a single monsoon afternoon can fill a pot to the brim, a container with no drainage hole will drown roots within days, and no watering discipline can save it.

Check the base before you buy. A great many decorative pots, particularly glazed ceramic and molded cement, are sold with no hole at all, or with one so small it blocks within a season. Plastic is usually easy to drill or burn a hole through afterward. Cement often is not, and glazed ceramic can crack when you try.

3. Can you lift it when it is full?

Empty pots are light. The same pot filled with damp growing medium is a different object, and it stays that way permanently, because it will be watered again tomorrow.

Lift the empty container in the shop and imagine it heavy. If you would struggle with it full, you will never move it again once it is placed, which means the spot you first put it in is the spot it lives in forever. That is fine if you have already checked the sun there. It is a problem if you were planning to adjust things later.

Weight matters for a second reason. A row of full containers puts real load on a slab or a balcony floor, and how much your particular building can take is not something this site can tell you and not something you should guess at. If you are planning anything beyond a modest set of pots, that question goes to a qualified engineer or to your building management, not to a gardening guide.

4. The material, because it decides your watering routine

Clay, plastic and cement behave completely differently in this heat. One dries out fast and keeps roots cool, one holds water and cooks in the sun, and one is effectively permanent once you set it down. Which one suits you depends less on the plant than on how often you can realistically water. That decision is worth making before you shop, and it is covered fully in clay vs plastic vs cement pots in heat.

Where the five come from

A local nursery is the straightforward option, and it lets you buy containers, growing material and seedlings in one trip. It also puts you in a sales conversation you may not have the vocabulary for yet, which is worth preparing for. Buying pots, soil and chara at a local nursery covers what to ask for by name and what to check before anything goes in the bag.

You may also not need to buy five containers at all. Plenty of what a household already throws away works as a planter, with one important safety question attached to it. Reusing paint buckets, oil tins and rice sacks as planters covers which containers are safe for food crops and which are not, and that distinction matters more than the money it saves.

What to skip on day one

Drums. A half drum is genuinely the right container for the large gourds, and it is the wrong first purchase, because once it is filled it is permanent and you do not yet know where things should go. Come back to drum and half-drum planters in your second season, or once the space has proven itself.

Matching sets. A row of identical pots looks tidy and tells you nothing. Mixed sizes teach you more in one season than a matched set will in three.

Anything decorative with no drainage hole. It will be the first container that kills a plant, and it will not be obvious why.

A large quantity of anything. The most common early mistake is buying a full setup before checking access, sun and safety, all three of which are free to check and expensive to have gotten wrong. That is the argument the whole of how to start a rooftop or balcony garden in Dhaka is built around.

FAQ

Is five pots enough to grow anything worth eating?
Yes. Two large containers of fruiting plants plus a shallow container of fast greens produces food you will genuinely use in the kitchen. It will not replace your vegetable shopping, and nothing on a first balcony does.

Should I buy big pots straight away so I do not have to repot?
Only for plants you know need the room. A large container costs more to fill with growing medium, is heavier to move, holds water longer, and in the monsoon that becomes a drainage problem rather than a benefit.

Can I use one big container instead of several small ones?
You can, and many people do successfully. The tradeoff is that it commits you to one spot and one set of conditions, which is exactly what a first season should be testing.

What size pot do I need for a chilli plant?
Deeper than most people expect and deeper than the pot it was sold in. Rather than reaching for a number, buy the deepest container in your budget for anything fruiting, and keep the shallow ones for greens.

Do I need to buy pots before I know how much sun I get?
No, and it is better not to. Sun exposure decides what those pots can hold, so measure it first. Reading sun hours in a city flat explains how to check your own space properly instead of guessing from the compass direction.