▁commercial ▁protection ▁under ▁EU ▁law . ▁They ▁are ▁produced ▁in ▁K art u zy , ▁Ko ści er z yna ▁and ▁By t ów ▁count ies ▁and ▁in ▁the ▁municipal ities ▁of ▁Pr zy wid z , ▁We j her owo , ▁Lu z ino , ▁Sz em ud , ▁Lin ia , ▁Ł ę czy ce ▁and ▁C ew ice ▁in ▁K ash ub ia . ▁Only ▁the ▁following ▁vari eties ▁may ▁be ▁sold ▁as ▁k asz ë b sk ô ▁mal ë na : ▁S eng a ▁S eng ana , ▁Els anta , ▁H one o ye ▁that ▁have ▁been ▁grad ed ▁as ▁Ext ra ▁or ▁Class ▁I . ▁ ▁Man uring ▁and ▁har vest ing ▁▁ ▁Most ▁st raw berry ▁plants ▁are ▁now ▁fed ▁with ▁artificial ▁fert il izers , ▁both ▁before ▁and ▁after ▁har vest ing , ▁and ▁often ▁before ▁plant ing ▁in ▁pl ast icult ure . ▁ ▁To ▁maintain ▁top ▁quality , ▁ber ries ▁are ▁har v ested ▁at ▁least ▁every ▁other ▁day . ▁The ▁ber ries ▁are ▁picked ▁with ▁the ▁caps ▁still ▁attached ▁and ▁with ▁at ▁least ▁half ▁an ▁in ch ▁of ▁stem ▁left . ▁St raw ber ries ▁need ▁to ▁remain ▁on ▁the ▁plant ▁to ▁fully ▁rip en ▁because ▁they ▁do ▁not ▁continue ▁to ▁rip en ▁after ▁being ▁picked . ▁R otted ▁and ▁over ri pe ▁ber ries ▁are ▁removed ▁to ▁minim ize ▁insect ▁and ▁disease ▁problems . ▁The ▁ber ries ▁do ▁not ▁get ▁was hed ▁until ▁just ▁before ▁consumption . ▁ ▁So il