About: http://webisa.webdatacommons.org/137903435

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The general answer would be because the plants are not growing, which means there is a limiting factor.
http://www.w3.org/ns/prov#wasQuotedFrom	plantedtank.net