 This is normally measured using mol m−2s−1, but the value relevant for plant growth is the Daily light integral (DLI), the PPFD integrated over 24 hours.Most plant species will grow well with a DLI of 5-15 mol m−2 day−1.Shade-tolerant species can grow with DLI values of 1-3 mol m−2 day−1, light-demanding species easily handle 30-50 mol m−2 day−1.