Cooking and purifying the base. 3 Next, the gum base is cooked in kettles at 243 degrees Fahrenheit (116 degrees Celsius) until it has melted into a thick syrup. To purify it, workers pass it through screens and place it in a high speed centrifuge before refiltering it, this time through finer screens.
Even if you donât use herbicides in your garden, overspray and wind-blown droplets may find their way to your tomato plants. Leaf curl is one sign of herbicide damage. Depending on the herbicide, leaves may tilt down with curled edges to form cupped leaves, or the leaves may pucker and curl.
The cold overnight temperatures caused some tall tomato plants to have black leaves and a few to wild at the Greer Community Garden, reported Master Gardener Buddy Waters. âWe didnât have a freeze and only a few of the plants were harmed,â Waters said.