how can you tell if a plant in veg is ready to clone?

how can you tell if a plant in veg is ready to clone? its a month old

Pictures would help.

Cloning How-To This really helped me and it explains everything you need to know

whats confusing me is in alll the guides their examples are big branches with 5 leaves... im cloning in veg and none of my plants have more than three so far also they still have flimsy stems not woody thick ones will i be seuccesfull anyways?

I think the stems need at least 2 or 3 node spaces before you can take a clone. Depending on your method you might want to do later or earlier. For rockwool/cube cloning I like having a much thicker stem as it helps keep them sturdy when you're putting them in cubes. If you're doing aero/bubble cloner I think you could get away with an earlier time and thinner stem.

when it has alternating nodes

Dude,
A month into vegging you should be ready to flower... Your plant (generally speaking) should be 10"-17" with 8-10 nodes. Flimsy green stems after a month sounds like your doing something wrong.

Do you have:
Proper lighting? What are you using?
Large enough containers? 3 gallon is perfect.
Gentle fan blowing? It stregnthens the stems.
Are you over-watering? This causes a multitude of problems.

When you clone you want a branch that is still green, about 3-6" long. Cut off all the fan leafs except the top two (those you cut in half). Cut the stem at a 45 degree angle so the clone is about 2 1/2" long, put in rooting compound, then in green house.... Its really not all that hard. I've had 100% success so far!

Good Luck!

yeah they started without proper lighting, so now they're like a foot tall with only 3 nodes. so i dont know theyre pretty hea;thy now growing rapidy but i dont know if i have to wait for 5 more nodes or if its ok to even clone these plants or not. also im not willing to buy any greenhouse things right now.. is it completely necessary? can i train these small plants to spiral or something . any help appreciated