Microplastics (MPs) are plastic particles less than 5 mm in size emerging as a significant human and health concern. In this study, we have inventoried microplastics content in market-available compost and subsequently examined their impact on wheat crop growth using the two most MP-contaminated composts. The crops selected for the study were bread wheat (Triticum aestivum L. cv.) and durum wheat (Triticum durum L. cv.). Market-available compost samples, categorized as organic and vermicompost, were analyzed for MP content and basic physicochemical properties. All compost samples were tested positive for microplastic contamination, corroborating that MPs can enter agroecosystems by applying organic fertilizers also such as vermicompost. The observed relationship between microplastic concentration and electrical conductivity could significantly affect compost fertility, soil health, and plant growth. Vermicompost samples exhibited higher MP concentrations than organic composts, potentially due to the activity of earthworms. In our laboratory-based study, no significant adverse effects were observed on shoot weight, root weight, vigor index I, and vigor index II. However, durum wheat showed greater sensitivity to microplastic-manure interactions than bread wheat. Specifically, bread wheat exhibited nearly 100% germination across all Polyvinyl chloride (PVC) and Polyethylene (PE) treatments, whereas durum wheat demonstrated approximately 60% germination under the same conditions. These findings suggest differential sensitivity of wheat varieties to microplastic contamination in compost. These results underscore the need for further research into the impacts of microplastic contamination in compost on different crop species and highlight the importance of mitigating microplastic pollution to ensure sustainable agricultural practices and to protect soil health.