Answer: Most vines take several years to become well rooted and established and begin to grow and bloom their best. Trumpet vine is very vigorous once it gets going. In the meantime while you wait, topdress once or twice a year with good quality compost and use an organic mulch over the root area. Spread it out in a flat layer two to three inches thick. Water as needed during dry spells to keep the soil slightly moist, meaning damp like a wrung out sponge. Do not be tempted to overfertilize as this can encourage excessive vegetative growth at the expense of flowering. Also, trumpet vine grows best in full sun all day long. In a partly shaded site it will be a bit slower. I hope this helps.
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