grow bulb

Several listings note low heat output to protect plants. Operating temperature ranges shown in product details include examples such as -4°–113°F and -4°–104°F.

PPF values in the listings range from about 12.85 up to 72 micromoles per second (µmol/s). Reported wattage usage spans roughly 8.5 watts up to 40 watts across the bulbs.

Product details describe either full-spectrum light or a balanced red–blue spectrum that supplies blue and red wavelengths for vegetation, flowering, and fruiting. Several descriptions note the light appears as a pleasing white to the eye.

Shapes include standard A19 and BR30 as well as non-standard and integrated LED/fixture styles. Overall lengths vary by product; example listed lengths include 1.5 in, 2.4 in, 2.75 in, 4.65 in, 5.8 in, and 24.21 in.