For example, an individual can be AB, D positive, and at the same time M and N positive (MNS system), K positive (Kell system), Lea or Leb negative (Lewis system), and so on, being positive or negative for each blood group system antigen.
Nearly every list of easy-to-grow vegetables starts with lettuce, and with good reason: so long as you plant it at the right time, it will grow from seed with little attention. The right time is when the soil is cool, in the spring and fall. In Arkansas, you can plant lettuce seeds from February to April, and again in September for a fall harvest.
3. Tomato seed germinates fairly quickly, within 5-10 days. The plants also develop fast, so seeds can be started 6-8 weeks before you intend to transplant outdoors. Your transplant date will depend on your last frost date (determined by your USDA hardiness zone) and that year's actual weather. Heirloom Tomatoes-Great varieties for flavor. 2  Plant Size-Many seed descriptions will tell you the mature size of the plant. 3  In general, determinate plants tend to be smaller than indeterminate tomatoes. 4  Small plants for containers often have names like 'patio' or 'pixie'.