How can I tell if it's natural senescence or a problem?

The National Integrated Drought Information System (NIDIS) is a multi-agency partnership that coordinates drought monitoring, forecasting, planning, and ... This means [it does] not need a partner plant to be pollinated and bear ... the only place i've seen the leaves referenced as edible is on the plants for a future ... Plants are either all male or all female. Its leaves are wavy, margined to lobed, up to 6 inches long and armed with yellowish spines. It has small purple to ... Most anthocyanins are produced in the autumn, in response to bright light and excess plant sugars within leaf cells. During the growing season, chlorophyll is ... For soybean, the margins of the leaflets turn light green to yellow when K is deficient (Figure 3). ... Soybean plant with yellowing of leaves margins. Sep 30, 2018 ... ... can cause the leaves to fade and yellow. Keeping the light high not only allows the Hoya plant to grow better, it also helps keep the soil ... Tree rusts are fungal diseases causing dusty orange, brown or black spots (pustules) on the leaves of poplar, willow, birch and plum, and cankers on the ... Jun 14, 2021 ... Immediately, I started looking around and trying to gather several key informative clues from the garden to help determine what the problem ... Only the top three or four leaves are left to support plant growth. ... Area adjacent to leaf margin is yellow. Large cultivar. Slow grower. Tall plant ... The top leaves are green but the lower down the plant the more yellow and russet the leaves are. ... will update my page to correct mis-information. Note that I ...