Grow Light Timers With Sunrise-Sunset Schedules for Houseplants

The best grow light timer with a sunrise and sunset schedule for houseplants is the myTouchSmart Plug-in Digital Timer if you want a simple plug-in box that follows daylight on its own, and the WiZ Smart Plug if you want sunset-to-sunrise automation run from an app. For plants, the honest catch is that houseplants care about a steady number of light hours, not the exact minute the sun rises outside your window, so the best setup is usually a timer that can do both: follow dawn and dusk when a bright window does most of the work, and hold a fixed daily window when the lamp is the main light.

This guide is research-based. We did not personally use these products. Specs come from the listing titles and the makers’ own product pages, and anything we could not confirm is marked “not listed”. It also works all year, not only in the dark weeks of late autumn and winter, because a reliable light schedule helps seedlings, herbs and tropical foliage in any season.

Top Picks at a Glance

• Best Overall: myTouchSmart Plug-in Digital Timer, a two-outlet box with auto-adjusting sunrise and sunset plus eight custom on/off times.
• Best for Sunset-to-Sunrise Automation: WiZ Smart Plug, an app-controlled plug sold in a 3-pack with a sunset-to-sunrise automation named in its listing.
• Best Value Fixed Schedule: BN-LINK Indoor 7-Day Programmable Digital Timer, with eight on/off programs and Random and daylight-saving modes.
• Best Smart-App Plug: Kasa Smart Plug Ultra Mini 2-pack for per-shelf schedules through a phone app.
• Best Light With a Built-In Timer and Dimming: GLOWRIUM Smart Full Spectrum LED Grow Light, modular pieces with auto timer, stepless dimming and an app.
• Best Budget Desk Light: LBW Desk Grow Light, 214 LEDs with a 4/8/12 hour timer.
• Best for Tall Plants: yadoker Full Spectrum Halo Plant Light 2-pack with 8/12/16 hour auto timer and a telescopic pole.

Our short answer: if your grow light has no timer of its own, buy a timer and plug the light into it. If your grow light already has a 3/9/12 hour timer, a plug-in timer is still useful because it gives you a true daily start time, while the lamp’s own timer only counts down from the moment you press the button.

Quick Comparison Table

1. myTouchSmart Plug-in Digital Timer: Best for a Sunrise and Sunset Schedule Without an App

• Two grounded outlets in one plug-in body
• Auto-adjusts sunrise and sunset to your location’s daylight times
• Eight custom on/off times
• Battery backup keeps settings through a power cut
• Indoor use for this white listing; the maker also sells a black indoor/outdoor SunSmart version

Best for: a windowsill or shelf light that should simply follow the day without a phone. Skip if: you want exactly 14 hours of light every single day regardless of season, because a pure sunrise-to-sunset schedule shortens in winter.

This is the most literal answer to the keyword. The maker describes its SunSmart technology as adjusting preset sunrise and sunset times to the dawn and dusk times in your region, and the listing adds eight custom on/off events. That combination is what makes it useful for plants. Use the sunrise and sunset presets when you are supplementing natural light on a bright window, then switch to custom events when the lamp is the main light source and you want a fixed daily window of, say, 7 am to 9 pm.

The battery backup matters more than it sounds. Cheap timers lose their clock after an outage and quietly turn the lamp on at the wrong hour, which for a light-sensitive plant like a moth orchid or a calathea can mean light at midnight. The listing does not give the electrical ratings, so check the manual before plugging in a large multi-bar fixture; one or two small LED grow lights draw very little power and sit well within the limits of a typical plug-in timer.

The second outlet is useful for a small fan or a humidity device that should run on the same schedule. Whether the two outlets switch together is not stated in the listing, so do not assume you can run them on separate schedules.

Pros: follows daylight automatically; custom events for fixed photoperiods; battery backup; no app or account; two outlets. Cons: indoor use on this version; electrical ratings not listed; outlets likely switch together.

2. WiZ Smart Plug 3-Pack: Best for Sunset-to-Sunrise Automation Across Rooms

• Sunset-to-sunrise automation named in the listing
• Control by app or voice, compatible with Alexa, Google Home and HomeKit per the listing
• Motion detection feature named in the listing
• Sold as a 3-pack

Best for: a household with plants in a living room, a bedroom and a kitchen that wants one app for all of them. Skip if: you do not want a phone-and-Wi-Fi dependency for a lamp.

The listing is explicit about the automation this article’s keyword is about: sunset to sunrise. Two things need to be kept straight for plants. First, a dusk-to-dawn rule turns a light on when it gets dark, which suits decorative lamps and porch lights but is the opposite of what a grow light needs, because plants need their light during the day. You would instead build a schedule that starts at sunrise or a fixed morning time and ends at a set evening time. Second, the motion detection feature is irrelevant to plant care and can be left off.

The strength of a smart plug is that a schedule is easy to edit. If you move a fern from a bright window to a dim hallway, you can extend the lamp’s window by an hour from your phone instead of crawling behind the shelf to a dial. With three plugs you can also put a humidifier or a propagation heat mat on its own schedule. The trade-off is that a network problem can leave a plug unreachable; check the maker’s notes for how the plug behaves when Wi-Fi is down, which is not listed.

Pros: flexible schedules; three plugs; voice and app control; sunset-to-sunrise automation. Cons: needs Wi-Fi and an app; offline behavior not listed; more setup than a plain timer.

3. BN-LINK Indoor 7-Day Programmable Digital Timer: Best Value for a Fixed Photoperiod

• Two outlets in one unit
• Eight on/off programs and a 7-day calendar
• Random and daylight-saving modes
• 15A / 1875W, ETL listed

Best for: growers who want the same hours every day and a different pattern on weekends. Skip if: you specifically want automatic sunrise tracking.

This is the sturdy, no-surprise choice. Eight programs are plenty: one pair of on and off events gives you a daily window, and extra programs let you add a midday break for a shade-loving plant or a short evening top-up. The daylight-saving mode saves you from a twice-yearly clock fix, which is a classic reason plant lights drift off schedule. The Random mode is designed to vary the switching time slightly for lived-in lighting; turn it off for plants so the photoperiod stays constant.

The 15A / 1875W figure is the plug’s limit, and an LED grow light uses a small fraction of it. If you run several lights on one shelf, add up the wattages printed on each power supply and stay well below the limit.

Pros: eight programs; weekday and weekend control; daylight-saving mode; ETL listed; two outlets. Cons: no sunrise or sunset tracking; button interface takes patience; indoor use.

4. Kasa Smart Plug Ultra Mini (2-Pack): Best Compact App Plug for Shelves

• 15A rating, compact body that leaves the neighboring outlet free
• Works with Alexa and Google Home, no hub required
• 2.4GHz Wi-Fi only
• Sold as a 2-pack

Best for: crowded outlets and shelf setups. Skip if: your router is 5GHz-only or you dislike apps.

The mini body is the selling point: it is designed not to block the neighboring outlet on a power strip or wall plate, so you can run one plug per shelf. The listing confirms the control is app-based and voice-compatible. It does not state whether sunrise and sunset triggers are included, so open the maker’s app description before buying if that is the feature you want. Treat it as an app timer first and a sunrise tracker only if the maker confirms it.

Pros: slim; two plugs; no hub; voice control. Cons: 2.4GHz only; sunrise options not confirmed in the listing; needs an app.

5. GLOWRIUM Smart Full Spectrum LED Grow Light: Best Light With Timer, Dimming and App

• Full-spectrum LED, 16W for the two-piece set (32W for four, 48W for six)
• Auto timer and stepless dimming
• App with a plant assistant and watering reminders
• Modular design

Best for: someone who wants one product and a gentle dimmed light level rather than assembling a lamp, plug and timer. Skip if: you want a documented sunrise ramp; the listing names a timer and dimming, not a gradual ramp.

Stepless dimming is the closest practical way to mimic a softer morning and evening. If the app lets you dim in the first and last hours, you get a rough version of a sunrise and sunset schedule. We cannot confirm an automated ramp from the listing, so we list it as not stated. The modular design lets you add pieces as a collection grows, which is handy because many people begin with two plants and end with ten.

Pros: all-in-one; dimming; app; modular. Cons: ramp not listed; app dependence; PPFD output not listed.

6. LBW Desk Grow Light: Best Budget Option for Seedlings and Small Plants

• 214 LEDs, full spectrum
• 4/8/12 hour timer, 6 brightness levels
• Desktop mount with a 10 to 26 inch height range

Best for: seed starting and a few small pots. Skip if: you need a repeatable clock-time schedule on its own.

The built-in timer counts down from the moment you set it, so by itself it gives you a 12 hour burst and not a start-at-7 am routine. The easy fix is to leave the lamp’s timer on its longest setting and put the lamp on a plug-in timer from the list above, so the plug starts the day and the lamp’s own timer simply never gets in the way. That small combination gives you a sunrise-style start at a modest cost.

Pros: low cost; adjustable height; several brightness levels. Cons: countdown timer only; small coverage area.

7. yadoker Full Spectrum Halo Plant Light (2-Pack): Best for Tall Plants and Longer Windows

• 72 LEDs, 5V
• 10-100% dimmable
• 8/12/16 hour auto timer
• Telescopic from 13.7 to 61.1 inches

Best for: a rubber plant, fiddle leaf fig or a floor pot where the lamp has to rise high. Skip if: you have a wide, bushy plant that needs coverage across a large width.

The 16 hour option is useful for seedlings and herbs that like long days; the 8 hour option suits plants that prefer less light. Since the head is a small halo, move it closer or farther using the telescopic pole to adjust. Dimming down to a low level also lets you give a plant a gentle start to its day when paired with a plug timer.

Pros: tall reach; dimmable; three timer lengths; two lamps. Cons: small head; countdown timer; output measurements not listed.

Also Consider

• DEWENWILS Indoor 24 Hour Programmable Digital Timer: one outlet, three on/off programs, 125V / 15A, a simple choice if you want a single dedicated lamp timer.
• LBW Grow Light with Stand, 642 LEDs: three heads, 3/6/12 hour auto timer, six brightness levels, 68 inch adjustable stand for large plants.
• Barrina T10 Pro Vertical Grow Light: 42W full spectrum, 4 to 5.6 ft, mechanical timer, for tall side lighting.
• LEOTER Grow Light with 80 LEDs: 3/9/12 hour timer, 10 dimmable levels and a gooseneck for clip-on use.

How We Chose

We started from the search itself: people typing this keyword want a timer that can follow sunrise and sunset, and a grow light that fits a houseplant routine. We then compared manufacturer product pages, store listing details and independent coverage of plug-in timers and smart plugs from outlets such as Wirecutter and Consumer Reports, to see which features recur. We did not personally use these products, and nothing here is a lab measurement. We kept to products that appear in the site’s product store, no more than two per brand, and marked unknowns as “not listed” rather than guessing.

Three criteria decided the order. First, does the product give a real schedule (clock-based, sunrise-based, or both), not just a countdown. Second, does it protect the schedule (battery backup, daylight-saving mode). Third, is it clear and sensible to use with a small LED grow light, with the electrical limits visible.

Buying Guide

Sunrise and sunset versus a fixed photoperiod

A sunrise-and-sunset timer shortens light in winter and lengthens it in summer, which tracks nature but can leave a plant that needs 12 to 14 hours of supplemental light underexposed in December. A fixed window gives consistent hours. Many foliage houseplants are commonly given roughly 12 to 14 hours of bright light a day, while seedlings and herbs often get 14 to 16 hours; always follow the guidance for your species. If a window already provides several hours of light, set the grow light to fill the gap rather than replace it.

A quick worked example: a south-facing window gives a pothos about 6 useful hours of bright light in late autumn. To reach a 12 hour day you would add the lamp for the remaining 6 hours, for example 4 pm to 10 pm. A sunrise-based timer would start the lamp at dawn, when the window is already dim but the plant is not yet getting useful light, and would end it at dusk, long before the plant has had its full day. A custom event solves that in a minute.

Built-in timer versus plug-in timer

A lamp timer with 3/9/12 or 8/12/16 hour settings is a countdown. It starts when you press the button, so it drifts if you ever forget. A plug-in timer starts at a clock time every day. For most people the best arrangement is both: set the lamp to a long timer or continuous on, and let the plug control the daily window.

Electrical limits

Check the amps and watts printed on the timer, for example 15A / 1875W, and the wattage printed on the grow light’s power supply. A small LED panel uses a few watts to a few dozen, so a standard timer has big headroom. A large multi-head fixture, or a heat mat plus a fan on the same timer, needs a quick addition. Keep the total below the limit and follow the maker’s instructions for use.

Indoor, damp and outdoor use

Plants mean watering, and watering means splashes. Keep timers and cords off the soil surface and away from drips. Use an outdoor-rated timer only where a maker says so. For a balcony or greenhouse, look for a weather-resistant mark on the product and keep the connection above ground level.

Wi-Fi versus no Wi-Fi

Smart plugs make edits painless and let you check from a phone. Digital timers keep working with no network. If you travel often, a plug that remembers its schedule offline is valuable; check that detail with the maker before buying.

Plant Light Schedule Cheat Sheet

Common Mistakes

• Setting a dusk-to-dawn automation on a grow light, which runs it at night and can disturb the plant’s rest period.
• Forgetting that a lamp’s own countdown timer shuts it off before the plug’s window ends.
• Putting the light too far from the leaves; most listed lamps are designed to sit within about a foot or two, so use the height range.
• Running the light 24 hours a day. Most plants benefit from a dark period.

Frequently Asked Questions

Can I use a sunrise and sunset timer for a grow light?

Yes, for supplementing window light. It follows daylight, so winter days get shorter hours. If the lamp is the main light, use custom on and off times instead so the hours stay steady.

How many hours should a grow light be on for houseplants?

Many foliage plants are given about 12 to 14 hours, and seedlings and herbs often get more. Check the care notes for your plant, and leave a dark period each night.

Do I need a timer if my grow light already has one?

The built-in 3/9/12 style timer counts down after you press a button. A plug-in timer is what gives you the same start time every morning, so using both is common.

Can a smart plug handle a grow light?

Generally yes for small LED lights, if the plug’s amp and watt limit is above the light’s power draw. Check the numbers on both.

Which is better, a digital timer or a mechanical timer?

Digital timers offer finer control and multiple programs. Mechanical dial timers are simple but usually work in 15 or 30 minute steps.

Will dimming help mimic sunrise?

It can, if you can reduce brightness manually or through an app in the early and late hours. Only some lights document an automatic ramp, so check before relying on it.

Is it safe to leave a grow light on a timer when I travel?

It is common practice, but keep the light a safe distance from leaves, never cover it, and follow the maker’s instructions. Keep cords away from water.

Which One Should You Buy?

If you want a true sunrise-and-sunset schedule with no app, buy the myTouchSmart Plug-in Digital Timer. If you want to manage several rooms from a phone, take the WiZ Smart Plug 3-pack or the Kasa Smart Plug Ultra Mini 2-pack. If you want a fixed and repeatable photoperiod at a low cost, the BN-LINK Indoor 7-Day Digital Timer is the dependable choice. If you have no grow light yet, start with the GLOWRIUM set for flexibility, the LBW desk light for small plants, or the yadoker halo pair for tall ones, and put whichever you choose on a plug-in timer.

Sources

• myTouchSmart (Jasco) product pages for SunSmart plug-in timers
• BN-LINK product page for the 7-day programmable digital timer
• Kasa Smart and WiZ manufacturer product pages
• Store listing details for GLOWRIUM, LBW and yadoker grow lights
• Wirecutter and Consumer Reports coverage of plug-in timers and smart plugs

Last updated: October 2026