Best Full Spectrum Light Bulbs For Plants: 10 Bulbs Compared

#1 · Best Overall

1. SANSI 15W A19

• Wattage: 15 W
• Bulb Shape Size: A19
• Voltage: 110 V

Best for: Higher-output A19 daylight bulb.

Why it ranks #1: Its A19 form, 15-watt draw, 4000K color, CRI 95, and stated PPF of 27 μmol/s make it a well-documented general-purpose choice.

SANSI’s 15W A19 bulb lists a PPFD of 152.83 μmol/s/m2 at one foot, giving growers a stated close-range output figure alongside 4000K daylight. Its full-spectrum coverage spans 400–780nm, making it a documented option for supplementary lighting through the plant life cycle.

The 15-watt draw and 200-watt incandescent equivalent give buyers a useful power-and-equivalence reference when selecting an A19 fixture. SANSI also lists PPF at 27 μmol/s and a CRI of 95, connecting measurable output with a natural-looking white light. A hollow structure transfers working heat to the air through natural convection, supporting heat dissipation during operation. The bulb is specified for 110 volts and 100–120V, 60Hz systems.

Skip it if you want a 10-watt PAR20 option rather than an A19; SANSI's 10W PAR20 two-pack matches that shape and wattage.

This bulb suits growers seeking an A19 daylight fixture with stated close-range PPFD and PPF figures. Consider the 15-watt draw and 110-volt specification when choosing a compatible lamp and planning its operating setup.

Listed on Amazon as: SANSI Grow Lights for Indoor Plants, 15W Full Spectrum A19 Grow Light Bulb

#2 · Highest Wattage

2. Lonwon 30W PAR38

• Wattage: 30 W
• Bulb Shape Size: PAR38
• Voltage: 120 V AC

Best for: PAR38 room-and-plant lighting.

Why it ranks #2: The 30-watt PAR38 has a stated 1300 μmol/m2/s at six inches and enhanced 660nm and 730nm wavelengths for a higher-output setup.

Lonwon’s PAR38 bulb combines a 30W rating with a 4000K natural glow, giving growers a larger reflector-style option that avoids harsh purple glare. Its targeted spectrum includes enhanced 660nm and 730nm wavelengths, with the listing stating 1300 μmol/m2/s at six inches for close placement planning.

The PAR38 form and E26 base let this bulb work in regular lamps, with listed examples including floor stands, ceiling fixtures, corded sockets, wall lamps, and clamp lamps with at least a six-inch shade. At 30 watts, it has a stated 320-watt incandescent equivalent. The 4000K light can blend into a garden room, while the six-inch output figure helps set a close-range starting point. Its listed voltage range is 100–240 volts.

Skip it if you need a low-wattage A19 bulb for a small fixture; Bioluz LED's 9W A19 three-pack uses that shape.

A suitable pick for growers with an E26 lamp that can take a PAR38 bulb and who want stated close-range output. Its 30W draw and six-inch figure make power use and placement important considerations.

Listed on Amazon as: Lonwon Grow Light Bulb, PAR38, 30W, E26, Full Spectrum, 1-Pack

#3 · Best Two-Bulb Pack

3. SANSI 10W PAR20

• Wattage: 10 W
• Bulb Shape Size: PAR20
• Voltage: 120 V

Best for: Daylight PAR20 plant lighting.

Why it ranks #3: This two-bulb PAR20 set lists 4000K light, CRI 95, PPF 16.8 μmol/s, and PPFD 97.91 μmol/s/m2 at one foot.

SANSI combines a PAR20 shape with 4000K daylight and a claimed CRI of 95, giving plant owners a compact reflector-style bulb with a natural-looking tone. Its full-spectrum coverage is listed from 400 to 780nm, and the two-bulb pack can serve a pair of compatible fixtures.

The secondary optical design is paired with a listed PPF of 16.8 μmol/s and PPFD of 97.91 μmol/s/m2 at one foot, offering buyers stated output figures for planning a nearby plant-light position. At 10 watts and a 150-watt incandescent equivalent, it uses a modest stated wattage while supplying a PAR20 form. The 120-volt specification and 4000K daylight color help define compatible fixtures and the room-facing appearance.

Skip it if you need an A19 bulb for an A19-only lamp; SANSI's 15W A19 grow bulb uses that shape.

Choose this SANSI pair for plants near compatible PAR20 fixtures when daylight-colored output and stated PPFD figures matter. Its reflector-style PAR20 shape is the key fit consideration, so it is not the A19 option for standard A19-only lamps.

Listed on Amazon as: SANSI LED Grow Light Bulbs 2-Pack, 10W Full Spectrum, E26 Base, 4000K

#4 · Most Bulbs Included

4. Briignite 11W A19

• Wattage: 11 W
• Bulb Shape Size: A19
• Voltage: 120 V

Best for: Bright white-light vegetable growers.

Why it ranks #4: Three A19 bulbs provide 5000K light and 1000 lumens each at 11 watts, useful when fitting several standard sockets.

The Briignite A19 pairs a 5000K white appearance with a red-and-blue full spectrum, letting indoor growers add plant lighting without the look of a purple-only bulb. Its listed 1000-lumen output and 180-degree spread suit tomatoes, cucumbers, peppers, leafy greens, and herbs across growth stages.

At 11 watts, this bulb is listed as equivalent to a 100-watt traditional bulb, giving a familiar A19 format with lower stated power draw. The 180-degree, 1000-lumen output can illuminate a broad area around a fixture, while the 5000K appearance keeps the light visually white. Three bulbs are included, which gives growers multiple fixtures to populate or spares to keep on hand; the listed voltage is 120 volts.

Skip it if you need a PAR20 bulb or a 4000K daylight option; SANSI's PAR20 10W bulb lists that shape and color temperature.

A practical match for growers who want white-looking A19 bulbs across several plant fixtures, especially for herbs and vegetables. Check that the 120-volt supply and A19 socket suit the intended lamps before installing.

Listed on Amazon as: Grow Light Bulbs, 5000K Full Spectrum Grow Light, LED Grow Bulb

#5

5. GooingTop 18W PAR20

• Wattage: 18 W
• Bulb Shape Size: PAR20
• Voltage: 120 V

Best for: Higher-wattage PAR20 growers.

Why it ranks #5: Its 18-watt PAR20 format offers more listed wattage than the compact A19 options, with a 5000K white full-spectrum description.

GooingTop lists an 18W PAR20 grow bulb with a 150-watt equivalent and 5000K white full spectrum, giving growers a higher-wattage reflector-style option for indoor gardens. The listing also specifically notes more heat output, a practical consideration when positioning the lamp near plants or other heat-sensitive items.

The PAR20 shape distinguishes this bulb from A19 options, so fixture shape is central to installation planning. Its 18-watt rating and 150-watt equivalent give buyers stated power references, while the 5000K white full-spectrum description identifies its light character. The product listing calls out more heat output, so placement and airflow deserve attention around the growing area. It is a one-bulb listing, and the supplied specifications identify plastic construction and 120-volt operation.

Skip it if you want a lower-wattage A19 bulb; FUJIECO's 9W A19 has a 4000K natural-white specification.

This GooingTop bulb suits growers with a compatible PAR20 fixture seeking 18W and 5000K white full spectrum. Account for its stated extra heat output when deciding lamp distance and placement around plants.

Listed on Amazon as: Grow Bulb for Plants Indoor Growing,LED 18W (150Watts Equiv) 5000K White Full Spectrum Plant Lamp with More Heat Output for Home Garden Inside Plant Growth,1 Pack

#6

6. FUJIECO 9W A19

• Wattage: 9 W
• Bulb Shape Size: A19
• Voltage: 120 V AC

Best for: High-CRI natural-white A19 lighting.

Why it ranks #6: This 9-watt A19 combines 4000K natural-white light with CRI 95, a useful standard-shape option for fixtures with limited wattage needs.

FUJIECO’s A19 bulb pairs a 4000K natural-white color with a listed CRI of 95, giving plant owners a full-spectrum option that retains a familiar white appearance. At 9 watts, it offers a lower-wattage alternative for compatible indoor fixtures without switching to a reflector-style bulb.

The A19 shape and 120-volt specification make fixture compatibility the first practical check. Its 9-watt draw is listed alongside a 100-watt incandescent equivalent, while the 4000K color and CRI 95 indicate a natural-white appearance with strong color rendering. Full spectrum is a listed special feature, but the supplied specifications do not provide a measured PPFD or PPF figure for distance planning. Its aluminum-and-plastic construction is also specified.

Skip it if you need a published PPFD figure for close placement; SANSI's 15W A19 lists PPFD at one foot.

Choose this FUJIECO bulb for an A19 fixture where natural-white color and CRI 95 matter. Growers who plan placement using measured PPFD or PPF will need a product listing that supplies those figures.

Listed on Amazon as: A19 Grow Light Bulbs, 9W Full Spectrum Plant Light Bulb for Indoor

#7

7. Flaspar 11W A19

• Wattage: 11 W
• Bulb Shape Size: A19
• Voltage: 120 V

Best for: Natural-looking A19 fixture bulb.

Why it ranks #7: The 11-watt A19 uses a natural-looking white full spectrum, with a stated 380–780nm range and compatibility with common A19 fixtures.

Flaspar describes its A19 full-spectrum bulb as natural white without glaring or unsightly lighting, enabling plant lighting that blends into an indoor room. Its listed 11-watt draw and 100-watt incandescent equivalent offer a familiar reference when replacing a traditional bulb in a compatible fixture.

The A19 shape and 120-volt specification help define installation compatibility, while the listed 11 watts and 100-watt equivalent give a simple power comparison. Flaspar identifies a 380–780nm wavelength range for plants at all growth stages, connecting the natural-looking white appearance with broad-spectrum use. Instant-on and energy-efficient are listed special features, which can suit routine operation without a warm-up step. The supplied information does not state a lumen output or color temperature.

Skip it if you need a stated lumen figure to compare brightness; Briignite's A19 bulb lists 1000 lumens.

This Flaspar A19 suits growers who want a natural-looking full-spectrum bulb in a compatible 120-volt fixture. Its stated wavelength range is useful context, but buyers comparing brightness will need a product with listed lumens.

Listed on Amazon as: A19 11W LED Grow Bulbs E26 Base Full Spectrum Plant Light Bulb for Indoor

#8

8. Nzkwrv 11W A19

• Wattage: 11 W
• Bulb Shape Size: A19
• Voltage: 110 V

Best for: Natural-white all-stage bulb.

Why it ranks #8: This 11-watt A19 lists 4000K natural white, CRI 85, and full-spectrum use across plant growth stages, though output details are limited.

Nzkwrv lists a balanced full spectrum with red and blue wavelengths for seed starting through flowering, giving indoor gardeners one bulb specified across the plant cycle. Its natural-white 4000K color and 1000-lumen output also provide a brighter, familiar-looking alternative to distinctly colored grow lighting.

The A19 format and 110-volt specification define its basic fixture requirements, while the stated 11-watt draw is equivalent to a traditional 100-watt bulb. The 1000-lumen output gives growers a concrete brightness figure to consider when placing the lamp near plants. Listed flicker-free and eye-friendly features speak to everyday viewing, and the aluminum-and-plastic material construction identifies the bulb’s materials. Its stated spectrum is intended for herbs, vegetables, and houseplants.

Skip it if you need a bulb specified for 120 volts; Briignite's 11W A19 grow bulb lists 120V operation.

Consider this A19 for seed starts, flowering plants, herbs, or houseplants where 4000K natural-white light is preferred. Its 110-volt specification is a key compatibility boundary; check the electrical setup before choosing it.

Listed on Amazon as: Grow Light Bulbs, 11W LED Full Spectrum Plant Light Bulbs for Indoor Plants

#9

9. mfxmf 9W A19

• Wattage: 9 W
• Bulb Shape Size: A19
• Voltage: 110 V

Best for: Red-blue spectrum two-bulb set.

Why it ranks #9: The two-bulb A19 set lists a 400–740nm spectrum and 9-watt draw, but its red/blue light description is less natural-looking.

The mfxmf pair offers a 400–740nm full spectrum and 150-degree light output in A19 bulbs, giving indoor growers two wide-spread lamps for plants at different stages. Its listed 9-watt draw and 100-watt incandescent equivalent provide a reference for replacing traditional bulbs in suitable fixtures.

A19 sizing and 110-volt operation make the basic installation parameters clear for compatible lamps, while the 150-degree beam spreads light beyond a narrow point. The stated 400–740nm range is identified for all growing stages, and the listing recommends a 2–4.05-foot distance from lamp to plant. Two bulbs in the pack can support multiple fixtures, but the listed red/blue light color is an important consideration for rooms where people spend time.

Skip it if you prefer a white-looking bulb for a shared room; Briignite's 5000K A19 bulb combines a white appearance with red-and-blue spectrum.

A fit for growers prioritizing two A19 bulbs, broad beam coverage, and a specified plant distance. The red/blue appearance and 110-volt requirement are worth weighing before placing these in a frequently occupied room.

Listed on Amazon as: 2 Pack LED Grow Light Bulbs,Full Spectrum Plant Light Bulb, 9W Replace 100W

#10

10. Bioluz LED 9W A19

• Wattage: 9 W
• Bulb Shape Size: A19
• Voltage: 120 V

Best for: Soft-white three-bulb grow set.

Why it ranks #10: This three-bulb A19 set lists 3000K soft white and CRI 80; its warmer light and 40-watt equivalent are less compelling for plant lighting.

Bioluz LED offers three A19 bulbs with 3000K soft-white full-spectrum light, giving growers multiple lamps for indoor or outdoor plant setups where warmer-looking illumination is preferred. The listed 400–740nm range is described for all plant growth stages, making the spectrum relevant from early growth through later stages.

The A19 form is specified for use in lamps and fixtures, supporting straightforward installation where that bulb shape is required. Each bulb draws 9 watts and is listed as equivalent to a 40-watt incandescent, while the three-bulb pack can populate several compatible sockets. The 3000K soft-white color is warmer than daylight-colored options, a useful room-lighting distinction. The listing identifies 120-volt operation, CRI 80, and FCC, RoHS, and UL credentials in the title.

Skip it if you want a listed 100-watt incandescent equivalent; Briignite's 11W A19 bulb specifies that level.

Consider this set for growers who need three soft-white A19 bulbs across compatible indoor or outdoor fixtures. Its 3000K color and 40-watt equivalent are the key fit considerations for room appearance and brightness needs.

Listed on Amazon as: Full Spectrum Grow Light Bulbs for Indoor Plants, A19 9W LED Bulbs Indoor Outdoor Energy-Efficient 3000K Soft White Plant Light Bulbs FCC RoHS Compliant UL Listed