Gadenin日本語Get the appLook in the morning, because that is when there is something to see
Everything worth observing on this plant happens before mid morning. The flowers are open, the buds due tomorrow are visible as tight spirals, and the plant has not yet wilted from afternoon heat, so its water state is honest. An evening inspection of a morning glory tells you almost nothing: the flowers are shriveled, and a vine limp from heat looks identical to one that is genuinely dry.
Give it two minutes. Count the open flowers, glance at the growing tips, look at the lowest leaves, and put a hand into the soil at the base. That is the whole inspection, and done regularly it catches every common problem while it is still cheap to fix.
The single most useful habit is checking at the same time each morning. Flower counts taken at seven and at eleven are not comparable, because half the display has already closed by the later hour. Fixing the time makes a week's worth of numbers mean something.
| What you see | What it means | What to do |
|---|---|---|
| Huge dark leaves, thick stems, no buds | Too much nitrogen | Stop all feeding; expect buds in three to four weeks |
| Long stems, widely spaced pale leaves | Not enough light | Nothing this year; move the planting position next season |
| Small dried buds on the soil below | Drought stress dropping buds | Water deeply and consistently, especially containers |
| Yellow lower leaves in midsummer | Shading from the vine above, or waterlogging | Thin the tangle; check drainage at the base |
| Fine pale stippling on leaves | Spider mite in hot dry air | Water regularly; hose the foliage in the evening |
| Distorted growing tips | Aphids on the new growth | Jet of water; check again in three days |
| Gray patches on crowded lower leaves | Powdery mildew late in the season | Improve airflow, remove the worst leaves |
| Fat green pods behind spent flowers | Seed setting; flowering will thin | Remove pods within reach to extend the display |
The four things worth recording
You do not need a detailed journal. Four pieces of information cover almost every question you will ask yourself next spring, and each takes seconds to note.
First, the sowing record: the date, whether you nicked or soaked the seed, and the date the first seedling appeared. That interval is the fastest way to tell whether your seed treatment worked and whether the soil was warm enough. Second, the position of each plant along the support, with a note of which end is sunniest. Third, the first flowering date. Fourth, a weekly flower count taken at a fixed time.
Add one line about feeding, even if the line is that you fed nothing. This matters more than it sounds: the gap between a spring soil improvement and a flowerless midsummer is two months, and nobody connects them from memory.
- Photograph the whole support weekly Stand in the same place each time. A run of weekly photographs shows exactly how the coverage filled in, where the thin spots were, and when growth stalled, in a way that written notes never capture.
- Count open flowers on one fixed morning Pick a day of the week and a time, and count the whole plant or one marked section of it. An approximate count is fine; consistency between weeks is what makes the numbers useful.
- Mark the plant you keep seed from Tie a loop of string on the stem of the plant whose pods you leave to ripen, and note its position. Come autumn every vine looks the same and the marked one is the only one you can identify.
- Note the date of the first frost It ends the season overnight, and knowing your own date from two or three years of records tells you how much of a display you can realistically expect from a late sowing.
Watch for self sown seedlings in spring
Morning glory self seeds hard. A single vine can drop hundreds of seeds, and because the coat is hard, they do not all germinate the following spring. Some wait two or three years in the soil, which means the seedlings keep appearing long after you have stopped growing it. Watch the ground around last year's support in spring and take a note of how many come up.
The seedling is easy to recognize: two large butterfly shaped seed leaves on a thick stem, followed by the first heart shaped true leaf. They pull out easily while small and become far harder once the taproot is a few inches down, so a walk over the bed every week or two in spring settles the whole matter.
If the count rises year on year rather than falling, that is the observation that should change how you grow it. In some regions morning glory is a genuinely invasive weed, and the honest response to a rising count is to remove pods before they ripen and to grow the plant in containers instead of open ground.
Morning glory seeds are toxic if eaten, and self sown seedlings often appear in vegetable beds where they get pulled with the salad. Know what the seedling looks like, and keep collected seed labeled and out of reach.