Gadenin日本語Get the appCount 20 days from the day the silks appeared
The most reliable indicator you have is the date the silks first emerged from the tip of the husk. From that day to a ripe cob is 18 to 24 days, closer to 18 in hot weather and nearer 24 in a cool spell. Write the date on a label pushed into the ground beside the first plant to silk, and you will know within a couple of days when to start checking.
The picking window is genuinely short. A cob that is perfect one morning can be starchy four days later, because the sugars in the kernels convert to starch as the seed matures. This is a crop where checking every day for a week beats checking once a week.
| Sign | Not ready | Ready |
|---|---|---|
| Silks | Pale, moist, still growing | Dry, brown and shriveled at the tip |
| Days since silking | Under 18 | 18 to 24 |
| Feel through the husk | Soft, gaps at the tip | Firm and rounded right to the tip |
| Cob angle | Pressed close to the stem | Standing out from the stem |
| Punctured kernel | Clear and watery | Thick and milky |
The milk test settles it
When the outside signs say a cob is close, open a small window in the husk near the tip and press a thumbnail into one kernel. Watery clear liquid means wait two or three days. Thick white liquid like milk means pick it now. Thick, pasty liquid that barely runs means you are late and the cob will be doughy.
Peel the husk back only two or three inches, and only on the cob you are actually testing. If it turns out not to be ready, fold the husk back down and tie it with a twist of the husk leaf itself. An opened cob left open invites earwigs, birds and mold.
- Open a small window, not the whole husk Slit the husk with a thumbnail a couple of inches down from the tip and part it just enough to expose four or five kernels.
- Press one kernel with a thumbnail Puncture a kernel near the middle of the cob, not at the very tip. Tip kernels always run behind the rest.
- Close it back up if it is not ready Fold the husk flap back over and wrap it in place. Check the same cob again in two days.
Test the cob on the outside edge of the block first. Plants at the edge of a block get more light and usually ripen a day or two ahead of the ones in the middle.
Pick in the cool of the morning and cook it fast
Sugar starts converting to starch the moment a cob leaves the plant, and the warmer the cob, the faster it happens. A cob picked at midday in full sun loses noticeably more sweetness on the walk back to the kitchen than one picked at dawn. Pick early, and get what you are not eating straight into the fridge with the husks still on.
Supersweet types hold their sugar for a few days and are far more forgiving. Standard sweet types are best within hours. Either way, the husk is the packaging: leave it on until the moment you cook, because it stops the kernels drying out.
- Take it off with a downward twist Hold the stem in one hand, grip the cob, and pull down and twist at the same time. It snaps off at the base cleanly without tearing the stem.
- Get it out of the sun immediately Put picked cobs in a bag or box in the shade as you go. Do not leave them lying on the bed while you finish picking the rest.
- Chill with the husk on Anything not being eaten within the hour goes into the fridge in its husk. Do not strip the husks and then store.
Storing and freezing
In the fridge, husks on, a cob stays good for two to three days and acceptable for five. Standing the cut ends in a shallow dish of water makes no useful difference; cold is what matters. Any cob you know you will not eat within three days is better frozen than kept.
To freeze, blanch whole cobs in boiling water for four minutes, cool them in iced water for the same time, drain thoroughly and bag them. Blanched and frozen properly they keep their flavor for eight to ten months. Kernels cut from the cob after blanching take less freezer space and go straight into cooking from frozen.
| Method | Preparation | How long it keeps |
|---|---|---|
| Fridge, husk on | None. Do not strip the husk | Two to three days at best quality |
| Frozen whole | Blanch 4 minutes, ice 4 minutes, dry, bag | Eight to ten months |
| Frozen kernels | Blanch, cool, cut from the cob, bag flat | Eight to ten months, less space |
| Left on the plant too long | Nothing recovers the sugar | Use it for soup or feed it to the compost |
What to do with a block that all ripens at once
A block of corn sown on one day will ripen over about a week, and if you planted 16 plants you may have 24 cobs to deal with in that week. Plan for it: freeze the surplus on picking day rather than trying to keep it fresh, and next season sow two smaller blocks three weeks apart instead of one large one.
Once you have picked the last cob, cut the stalks down and take them off the bed. Corn stalks are slow to break down whole, so chop them into short lengths before composting. The roots can stay in the ground to rot; they open up the soil and add useful organic matter where the next crop will grow.
- Freeze on the day you pick Blanching a batch takes twenty minutes and preserves the sweetness. Cobs held in the fridge for a week and then frozen are already starchy.
- Record the picking dates Note the date of the first and last cob from each block. That span tells you exactly how far apart to stagger next season's sowings.
- Clear the stalks promptly Chop the stalks into six inch (15 cm) lengths for the compost pile. Left standing, they shelter borers and earwigs over winter.