The Journal Guides
Windowsill herbs: start with the light
Before choosing a planter, look at the window, the season and the herb you want to grow.
For a windowsill herb garden, choose the position before the pots. Watch how the light falls across the window, then select herbs whose growing needs suit it. A good-looking row of plants will be disappointing if the location cannot support them.
Begin with one herb you actually cook with. It is easier to learn how that plant responds than to buy six at once and try to work out why some are thriving while others are not. Keep the plant label or growing instructions somewhere you can find them.
Choose the herb for the light
The RHS explains that indoor plants need adequate light, and that artificial lighting can supplement it where appropriate. A room that feels bright to you isn't automatically suitable for every plant. Buildings, trees and the position within the room all affect what reaches a particular sill.
Look at the window at different times on a normal day. Note where direct sun reaches, what casts shade and whether the proposed position is actually some distance back from the glass. Use that observation alongside the advice for the herb you want to grow.
Don't make a grow light the automatic next purchase. First establish whether another position or another herb would be a better fit. If you do need supplementary lighting, use the RHS guidance to understand the setup rather than assuming any desk lamp will do.
Give the roots a suitable container
The RHS guide to herbs in containers is a useful starting point for choosing a container and growing medium. Good drainage matters. A decorative outer pot and the container the roots grow in do different jobs; check how excess water will leave the inner pot.
Make it easy to inspect and water the plant without soaking the sill. Lift a pot out over a clear surface rather than balancing it beside an open cookbook. Check the advice for your herb before choosing compost or deciding when it needs water.
A simple record helps. Note when you water and how the growing medium feels beforehand. You are looking for a pattern in your own room, not a universal instruction to water every plant on the same weekday.
Plan for the season you are in
The same window changes through the year. Notice shorter days, colder nights and the effect of heating indoors. Revisit the plant's growing instructions when conditions change rather than treating its position as a decision made once.
If growth disappoints, pause before buying more plants. Check the light, the container and your care routine one at a time. Replacing everything at once makes it harder to work out what happened.
Keep expectations proportionate. One herb that supplies an occasional useful handful can be a good beginning. This is not a promise of a year-round harvest from a particular window.
Bring the garden into the kitchen carefully
Keep a recipe nearby when you want to use what you've grown. Reading Rest holds an open book above the worktop with two page stays. Put it in a dry working area, away from the pots and watering, and check that your book fits.
If watching roots interests you more than growing herbs to cook with, try a separate project. Our water-propagation guide explains how suitable houseplant cuttings begin in water. The New Roots station is for that task. It isn't a substitute for the drainage and growing medium your potted herbs need.
Give each project its own place and start small. A windowsill becomes useful through what you learn there, one plant at a time.