Mountain Soursop (Annona montana) seeds freshly harvested 25 for $12. Mountain Soursop (Annona montana) seeds freshly harvested 25 for $12. Flood tolerant, cold tolerant, makes ideal rootstock for other annonas such as ilama, rollinia and salzmannii. Leaves have medicinal value. Difficult to locate seeds due to demand. USPS tracking. Paypal. Shipping $8.75.