Kauranen, Ralf,Loeytty, Olli (University of Turku, Finland),Nikkila, Aura (University of Turku, Finland),Vuorinne, Anna (University of Turku, Finland)
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You can have a spectacular perennial garden with less work than you might imagine - an average of one hour per month per 100 square feet. The secret, according to master gardener Janet Macunovich, is