What can be sown directly outdoors in April?

{"list_position":104,"systype":"article","name":"White Clover (Trifolium repens)","id":"MA-1370","list_name":"tree-139"}

{"list_position":105,"systype":"article","name":"Roundleaf Mallow (Malva neglecta)","id":"MA-1364","list_name":"tree-139"}

{"list_position":106,"systype":"article","name":"Beetroot 'Boltardy' (Beta vulgaris)","id":"MA-1362","list_name":"tree-139"}

{"list_position":107,"systype":"article","name":"Rocket Salad / Arugula (Eruca vesicaria subsp. sativa)","id":"MA-1361","list_name":"tree-139"}

{"list_position":108,"systype":"article","name":"Wild Pansy / Heartsease / Love-In-Idleness (Viola Tricolor)","id":"MA-1343","list_name":"tree-139"}

{"list_position":109,"systype":"article","name":"Argentinian Vervain / Purpletop (Verbena bonariensis)","id":"MA-1342","list_name":"tree-139"}

{"list_position":110,"systype":"article","name":"Mountain Arnica / Wolf's Bane (Arnica montana)","id":"MA-1335","list_name":"tree-139"}

{"list_position":111,"systype":"article","name":"Oxeye Daisy (Leucanthemum vulgare)","id":"MA-1333","list_name":"tree-139"}

{"list_position":112,"systype":"article","name":"Dame's Rocket / Damask Violet (Hesperis matronalis)","id":"MA-1332","list_name":"tree-139"}

{"list_position":113,"systype":"article","name":"Yellow Bedstraw (Galium verum)","id":"MA-1331","list_name":"tree-139"}

{"list_position":114,"systype":"article","name":"Carthusian Pink (Dianthus carthusianorum)","id":"MA-1330","list_name":"tree-139"}

{"list_position":115,"systype":"article","name":"Forking Larkspur (Consolida regalis)","id":"MA-1328","list_name":"tree-139"}

{"list_position":116,"systype":"article","name":"Cornflower (Centaurea cyanus)","id":"MA-1327","list_name":"tree-139"}

{"list_position":117,"systype":"article","name":"Common Columbine (Aquilegia vulgaris)","id":"MA-1324","list_name":"tree-139"}

{"list_position":118,"systype":"article","name":"Lacy Phacelia (Phacelia tanacetifolia)","id":"MA-1314","list_name":"tree-139"}