Checklists · Planting
Irrigation Conversation Preparation Checklist
Help an owner set out how a garden is watered at present, which areas genuinely need water and what would have to be dug or connected, so an irrigation conversation starts from observation rather than from a hope that watering will simply become automatic.
7 sections · 42 planning prompts · educational owner-side preparation
https://www.builddesignhub.com/checklists/planting-and-garden-maintenance/irrigation-conversation-preparation · Build Design Hub — educational planning resource. Requirements vary by project and location.
Scope
What this checklist covers
The preparation ground these prompts walk through.
- How watering is carried out at present and which planting quietly misses out
- Ground that dries out first and ground that stays damp regardless of weather
- Where water would be drawn from and what else already draws on that supply
- Routes any pipework would take and what is already buried beneath them
- Controls, absences and who keeps a watering arrangement working afterwards
Audience
Who this checklist is for
- Owners weighing an automatic watering arrangement for beds, pots or grass
- Households where new planting has failed and watering is suspected as the cause
- People preparing questions for an irrigation specialist, plumber or garden designer
- Owners who are often away and want planting watered while nobody is at the property
Timing
When to use it
- Recording how the garden is watered now and what a full round actually involves
- Marking which beds, pots and grass areas dry out first and which never do
- Noting where a hose reaches, where it does not and what it gets dragged across
- Preparing questions for a qualified plumber, electrician or irrigation specialist
- Deciding who is responsible for the arrangement once it is running
Limits
When it is not sufficient
This is general planning preparation. These situations need a qualified professional, and often the relevant authority.
- Designing a watering layout, sizing pipework or deciding what pressure is needed
- Judging whether a connection to the household supply is permissible at your property
- Any outdoor electrical work, which belongs with a qualified electrician
- Deciding how much water any particular planting needs on your plot
- Establishing what is buried in your ground, which needs a qualified professional
The checklist
Work through the sections
Tick the boxes on paper or on screen — nothing is stored, so print the page if you want to keep your marks.
1.The watering that happens now and what quietly misses out
Before anyone proposes an arrangement, it is worth writing down what actually happens when the garden gets watered, including the parts that get abandoned.
Write down who waters the garden at present, what they carry or drag, and the route they take from the tap to the furthest planting.
The route and the effort explain most of what survives in a garden, and they are rarely mentioned unless somebody asks about them.
Note what a full round of watering involves and whether it is finished in one go or abandoned partway when something else comes up.
An arrangement built around a round nobody completes will disappoint, whereas one built around the truth can be aimed at the gaps.
Mark the planting that is reached last or not at all, since those positions usually account for most of the losses in a garden.
Losses cluster at the end of the hose, and that pattern is far more useful evidence than a general sense that things dry out.
Record pots, baskets and raised beds separately from the ground beds, because they typically ask for water far more often in the same position.
Containers frequently create more watering than every bed combined, and treating them as part of the general garden hides that.
Note anything that gets watered because it is near the tap rather than because it needs it, since habit decides where water goes more often than need does.
Separating habit from need keeps an arrangement smaller, simpler and less likely to be watering ground that does not want it.
List what has died during dry spells and exactly where it stood, because a repeated pattern in one position is worth more than any general impression.
Repeated failures in one place point at something specific about that position, which is what a professional will want to look at.
Repeated losses in one spot may point to ground conditions rather than watering, which is a question for a qualified professional.
2.Parts of the plot that dry out first and parts that never do
Watering is usually needed in strips and corners rather than everywhere. These observations are yours alone to make and they shape everything that follows.
Mark the ground that sits against a sunny wall or a close-boarded fence, where planting tends to stay dry even after rain has fallen elsewhere.
Sheltered strips receive noticeably less rain than open ground, and they are commonly watered as though that were not the case.
Note the beds under or beside large trees and hedges, and raise them separately whenever watering is discussed.
Ground beneath established planting behaves very differently from open ground and it is one of the hardest positions to keep going.
What can be planted or watered beneath a tree, and any work near its roots, is a matter for a qualified arborist.
Record where the ground slopes and where water runs across the surface rather than soaking in, described as you have watched it happen.
Run-off means water applied to a slope may never reach the roots, which changes what an arrangement would have to do there.
Note anywhere a spade meets something hard not far down, and describe what you find rather than guessing what it is.
Shallow or obstructed ground holds far less water than it appears to, and it is a common explanation for planting that never settles.
What lies beneath the surface must be established by a qualified professional before any digging is arranged.
Mark the corners that stay damp whatever the weather, so nobody arranges watering for ground that plainly does not want any more.
Adding water to ground that is already wet causes its own problems, and these corners are easy to miss on a drawing.
Note which containers stand where wind crosses them, since exposed pots tend to dry far faster than sheltered ones in the very same garden.
Wind rather than sun is often the reason one pot needs constant attention while another nearby does not.
3.Where the water would be drawn from and what else uses it
Every watering conversation eventually reaches the supply. These prompts gather what you can observe and mark the parts that belong with qualified people.
Write down where every outside tap is, what it appears to be fed from and whether anything else is already connected to it.
Existing taps and their positions shape any proposal, and an unnoticed connection can change what is possible.
Note whether water is currently taken out through a window or door from an indoor tap, and how the household works around that arrangement.
A makeshift arrangement is a clear statement of what is missing, and it tends to be the first thing worth solving.
Record any rainwater store on the plot, how it is filled and whether it holds enough to matter once a dry spell sets in.
Stored water is often assumed to cover the garden and then runs out precisely when it is most wanted.
Ask a qualified professional to establish what the supply here can actually deliver, rather than assuming a hose that feels strong is enough.
What the supply can do decides what kind of arrangement is possible at all, and it is not something an owner can settle by feel.
Any connection to the household water supply is work for a qualified plumber, and what applies locally should be confirmed with your water supplier.
Note whether the supply is shared with another property, a flat above or a communal area, and who else could be affected by drawing on it.
Shared supplies bring other people into the conversation, and finding that out late can stop a proposal outright.
Where a supply is shared, what may be connected to it is a question for a qualified plumber and the other parties concerned.
Ask your water supplier and the local authority what applies to garden watering here when supplies are short, and write down what you are told.
An arrangement that cannot be used during the very conditions it was intended for is worth knowing about before it is built.
Restrictions on garden watering are set by your water supplier and the relevant authority, and only they can confirm what applies to you.
4.The route any pipework would take across the plot
Most of the disruption in a watering project is in the trenching rather than the fittings. These prompts get the route discussed before anything is dug.
Write down everything you know to be buried on the plot, including drains, cables and earlier pipework, and note where that information came from.
Owner knowledge is a starting point rather than an answer, but it tells a professional where to look and what to be wary of.
Buried services must be established by a qualified professional before any digging is arranged, whatever you believe you know.
Note where a line would have to cross grass that gets mown, and ask what marks its position so nobody strikes it later.
Unmarked runs under grass are struck by forks and aerators regularly, and the marking is decided at the outset or not at all.
Mark any paving, path or drive a line would have to pass beneath, and raise it early because that is the part that is awkward to change afterwards.
Crossing a hard surface is the most disruptive part of any run, and it is far easier to plan for than to add afterwards.
Note whether any run would pass under a wall or fence, or across land you do not own, and raise it before a layout is drawn.
A line that crosses a boundary brings other people into the arrangement and can stop an otherwise sensible route.
Anything crossing a boundary or another person's land needs their agreement and, where ownership is unclear, a suitably qualified adviser.
Consider where you might dig later for planting, a post or a structure, and ask for the layout to be recorded so you know what is beneath.
A garden keeps changing, and the run that was obvious during the work is invisible to whoever digs there next.
Note where a run would pass close to a tree or a mature hedge, and treat that as a question to be answered rather than a detail on a drawing.
Roots extend much further than the visible canopy suggests, and a route chosen for convenience can run straight through them.
Digging near tree roots must be discussed with a qualified arborist before the work is arranged.
5.Controls, absences and the person who has to understand them
An automatic arrangement is only as good as the person who can set it, notice a fault and turn it off. These prompts find out who that is.
Write down who would actually operate the controls, and whether that person is comfortable with a device they have to set and reset.
Controls that only one person understands become a problem the moment that person is unwell, away or has moved on.
Note who could attend if something fails while the household is away, and whether they would know where the water is turned off.
The point of failure is usually an absence, and knowing the isolation point is the single most useful thing a keyholder can be told.
Ask what stops the arrangement running while it is raining, and who would notice if it kept going anyway.
Watering in the rain is the complaint neighbours notice first, and it is worth asking how it is prevented before anything is agreed.
Ask what happens to any controls after a power interruption, and who would reset them and how they would know it was needed.
Settings lost during an interruption are rarely noticed until planting has suffered, particularly during the stretches nobody is there.
Outdoor power and any electrical connection for controls is work for a qualified electrician.
Note that pots, grass and established beds are usually watered differently, and ask how the arrangement would deal with them separately.
One setting applied to everything tends to overwater some planting while leaving other planting dry, and it is a common source of regret.
Ask to be shown how everything works before the people who did the work finish, and to have the explanation written down as well as demonstrated.
A demonstration on the final visit is forgotten within a season, whereas a written note survives a change of household or gardener.
6.Cold spells and the stretches when nothing is growing
Outdoor water arrangements are damaged when they are not being used. These questions cover the quiet part of the season and long absences.
Ask what has to happen to outdoor pipework before cold weather arrives, and write down who is responsible for doing it.
Damage from a hard frost is one of the most common faults in outdoor water arrangements and it follows an unclaimed task.
Ask where the supply is isolated from indoors, and make sure more than one person in the household knows exactly where that is.
The value of an isolation point depends entirely on somebody being able to find it while water is running.
Note the part of the season when nothing needs watering at all, and ask what the arrangement should be doing during it.
An arrangement left running out of season wastes water and hides faults that would otherwise be noticed straight away.
Ask how a leak beneath mulch or under grass would show itself, since water running unnoticed is a common complaint about buried lines.
Knowing what to look for is the only defence against a slow leak, because nothing on the surface necessarily changes.
Note the longest stretch the property is left empty, and ask what would be checked before it and again on return.
A checklist for leaving and returning is easy to agree at handover and almost impossible to reconstruct later.
Ask what has to be checked before watering starts again after a cold spell, and who carries that out.
Faults from cold weather usually appear at the first use afterwards, when nobody is standing there watching for them.
7.Keeping it working as the garden changes around it
Beds get replanted, mowers pass over things and parts stop being obtainable. These prompts look past the first season.
Note that beds get replanted and ask how the arrangement could be altered afterwards without digging out an entire run.
A layout that cannot be adjusted becomes a reason not to change the planting, which is not a position any owner wants.
Ask whether replacement parts can be obtained separately, and record what the components are so like can be matched later.
A written note of what was used is the difference between a small repair and replacing a whole section.
Ask what tends to clog first, what clearing it involves and whether it is something the household can attend to or a job for a professional.
Knowing which faults are ordinary upkeep and which are not stops small problems being left until they become large ones.
Note where anything would sit above the surface in mown grass, since fittings standing proud tend to meet a mower eventually.
Damage from mowing is entirely predictable, and positioning fittings away from the mower line at the outset avoids repeating it.
Ask for a marked-up drawing showing where everything runs, and keep it with the property papers rather than in a shed.
Drawings kept outdoors deteriorate or vanish, and the layout is exactly what the next owner or gardener will need.
Agree in writing who attends to the arrangement once the project ends, and how you would raise a fault with them.
Responsibility for a working arrangement is rarely stated at handover, and it is the first thing that becomes unclear.
Preparation
Documents and information to gather
Having these to hand usually makes the first conversation shorter and more useful.
- A sketch of the plot marking every outside tap, water store and planted area
- Notes on what a full round of watering involves and who carries it out
- Photographs of the beds and pots that dry out first, with positions marked
- Anything you hold about drains, cables and pipework already buried on the plot
- Any information your water supplier has sent you about the supply here
- A written record of what has failed in dry spells and exactly where it stood
Records
Decisions to record before work begins
Write these down in your own words, with the date, so everyone is working from the same version.
- Which areas genuinely need watering and which have been watered out of habit
- Whether pots and containers are staying, since they drive most of the watering
- Who operates and attends to any watering arrangement once it is running
- What happens to the garden during the longest absences from the property
- Whether digging is acceptable across grass, under paving or near trees
- Who is shown how everything works, and where the written explanation is kept
Professional review
Questions to discuss with qualified professionals
Bring these to the relevant qualified professional, supplier or authority. Requirements vary by project and location.
- What do you need me to record about this plot before you propose anything?
- What can the supply here actually deliver, and how would you establish that?
- Which areas would you water separately from the rest, and why those ones?
- What would have to be dug, and how would buried services be established first?
- What has to happen to outdoor pipework before cold weather, and who does it?
- How would a leak or a blockage show itself, and who attends to it?
- How can this be altered when I replant a bed, without digging out the whole run?
- What should I ask my water supplier and the local authority about watering here?
- What would you leave me in writing so that somebody else could run this?
Blind spots
Commonly overlooked items
- Pots and baskets, which often drive more watering than every bed combined
- Ground against a sunny wall, which stays dry even after heavy rain
- Where a buried line crosses grass to be mown or a bed that will be dug
- Who resets the controls after a power interruption while the house is empty
- What happens to outdoor pipework once cold weather arrives
- A leak beneath mulch running unnoticed because nothing looks wrong on top
- Keeping the marked-up layout somewhere other than a garden shed
What this checklist does not do
- This checklist prepares a watering conversation; it does not design a layout, size pipework or decide what any planting needs.
- Connections to the household water supply belong with a qualified plumber, and outdoor electrical work with a qualified electrician.
- What applies to garden watering when supplies are short is set by your water supplier and the relevant authority rather than by any checklist.
- Digging near trees, drains or unknown buried services must be discussed with a qualified professional, and with an arborist where trees are involved.
More preparation
Related checklists
Inspiration
Related Ideas Library pages
Design directions to explore once the preparation is done.
Go deeper
Related Build Design Hub guides
Explanatory planning guidance behind the decisions on this page.
Planting & Garden Maintenance Checklists
Planting brief and aftercare checklists — describing conditions honestly, agreeing who maintains what, and the questions for a designer, nursery or arborist.
Browse all Planting & Maintenance checklists →