Eastern Red Cedar .... if'n you don't have any/many apples close by
Plants with tolerance to juglone:
Perennials, Spring Bulbs, and Annuals:
Ajuga (Bugleweed), Geranium (Perennial Geranium), Alcea rosa (Hollyhock), Rudbeckia (Black-eyed Susan), Aster, Sedum, Astilbe, Solidago (Goldenrod), Athyrium (Lady Fern), Hemerocallis (Daylily), Campanula (Bellflower), Heuchera (Coral Bells), Deicentra spectabilis (Bleeding Heart), Iris sibirica (Siberian Iris), Monarda (Bee Balm), Phlox paniculata (Garden Phlox), Muscari (Grape Hyacinth), Veronica (Speedwell), Narcissus (Daffodil) and Zinna.
Evergreens, Vines and, Shrubs:
Juniperus chinensis (Chinese Juniper), Forsythia, Juniperus virginiana (Red Cedar (Juniper)), Hibiscus prolificum (Rose of Sharon), Thuja (Arborvitae), Lonicera (Honeysuckle), Tsuga Canadensis (Eastern Hemlock), Physocarpus opulifius (Ninebark), Clematis, Ribes (Currant), Lonicera (Honeysuckle Vine), Rosa (Wild Rose), Chionathus virinicus (Fringe Tree), Viburnum dentatum (Arrowwood Viburnum), Conrus alternifolia (Pagoda Dogwood), Euonymus and, Viburnum prunifolium (Blackhaw Viburnum).