Overwatering is all too easy with the Sweet fennel. It doesn’t require a lot of water in the first place and overwatering can lead to bulb rot. Some symptoms include: -Mushy bulb -Spotted, flopping stems -Droopy flowers -Yellowed stalk It is normal for yellow leaves to develop when Sweet fennel has reached the end of their blooming period. However, if the leaves turn yellow before the flowers have bloomed, it is a sign of over watering. Bulb rot is common and cannot be reversed, unfortunately. If you catch it early on, you will need to dig up the bulb and carefully remove the rotten portions. From there, you should remove all the soil that the plant grew in. If you use a pot, thoroughly disinfect it and any tools you use to avoid spreading the fungus. For outdoor plants, you should plant them in a different location. There’s not as much of an issue if you underwater this plant. Of course, you don’t want the soil to dry out entirely, but it’s much easier to solve an underwatering problem than an overwatering one. Some signs that your plant is underwatered include: -No blooms -Sagging, wizened stalks -Browning around the edges of the flower petals If you have given your Sweet fennel too little water, then do not panic. It has a level of drought tolerance. Once you have realised, give it a good drink but do not saturate the surrounding soil. Just make sure it is moist.But do not give them too much and overwater them, you just need to let the soil to be mosit. Extended periods in water can lead to root rot and fungus growing on the bulb. The fungus can cause serious damage to the bulb which is noticed through spots that appear on the leaves and buds. The tips of the leaves may also discolor and die.

Sweet fennel is fairly hardy and doesn’t need a ton of attention. While you can grow it in a pot, it does the best grown directly into the ground in the hottest/brightest part of your garden. Since this is a bulb plant, you’ll need to be extra careful about overwatering while the plant is growing as it will rot the bulb. Once you have planted your Sweet fennel, water them well once and then leave them. That initial watering will kick start their growth, but after that you can leave them be until you see shoots appear. For the best results, you’ll want to check the moisture of the soil after the growth of new leaves. Put your finger about an 2-3 inch below the surface of the soil. If it’s still wet, you don’t have to water the plant. For potted plants, you should also check the water collection train to see if there’s any standing water. If there is, you should avoid watering the plant. For a more accurate moisture reading, stick a moisture sensor about 2-3 inches into the soil. The reading should be in the middle of the ‘moist’ category. The recommended frequency of watering your Sweet fennel is once per week.

The Sweet fennel is a hardy plant and can survive a variety of harsh conditions. If you plant outdoors, you can usually get away with letting mother nature take the reins. It doesn’t require much in the way of water maintenance and can survive long periods of drought. You should just make sure that the soil you plant it in provides adequate drainage. When it comes to potted Sweet fennel, you need to be a bit more careful with your watering. Since this is a bulb plant, it is prone to bulb rot if it is overwatered. You can get away with watering your plant less inside. And, of course, make sure your pots have proper drainage holes! Use good quality, well-drained soil. Add some sand or rocks to increase drainage. The most you’ll be watering the Sweet fennel is during its growing phase. You should water about one inch per week to encourage the flowers to bloom. Withhold water until the stalk appears and then begin watering as normal. Of course, how much you water during the growing phase also depends on the overall humidity and temperature. If you live in a hot, dry climate, the water will evaporate faster so you might need to water your Sweet fennel more often. If you’re in a more humid climate, you can probably water your Sweet fennel less. Always check the soil moisture level to make sure it’s not too wet. These plants prefer well-drained, moist soil.

You can prune your Sweet fennel any time you notice dead, diseased, or damaged leaves during the growing season. Once you notice such a leave, locate an unwanted leaf, then follow its stem all the way to the bottom of petiole. Removing dead stems will increase the light and ventilation of the plant and help it to grow. You can cut its stem just above the soil’s surface to remove it. Such pruning can take place as needed during spring and summer. Also, this plant can bloom any time between spring and fall, and some gardeners choose to remove flower buds before they have a chance to open. Removing unopened flower buds allows this plant to focus most of its growing energy on its beautiful leaves. However, pruning in this manner does not necessarily influence the plant’s overall health. Cutting back should be done late in the winter to early spring. Ideally, you should wait until you see new basal growth before you cut off the dead and dried winter parts, to about 6 inches from the ground.

Pruning the Sweet fennel is as easy as waiting until you notice dead or damaged leaves on your plant. When you recognize these leaves, equip yourself with a pair of sharp and sterile hand pruning shears. Hand pruning shears will work best as larger tools like loppers will not be well suited to the precise cuts you need to make. Once you have a proper set of pruning tools, locate an unwanted leaf, then follow its stem all the way to the bottom of petiole. Removing dead stems will increase the light and ventilation of the plant and help it to grow. Cut the stem just above where it exits the soil to remove it entirely. If you wish to stop this plant from flowering, you can use the same pruning shears to remove any buds before they open. Finally, you may prefer to just trim off dead or damaged portions of the plant, including deadheading spent flowers, to keep it looking its best. This can be done at any time of year. Diseased or damaged stems should be cut right at the soil line and removed completely. Blooms should be cut off just below the flower head. Cutting back should be done late in the winter to early spring. Ideally, you should wait until you see new basal growth before you cut off the dead and dried winter parts to about 6 inches from the ground.

All that is required of you once you have pruned your Sweet fennel is to clean up. Once you have pruned, deadheaded, or cut back your Sweet fennel, gather the bits you have cut off and discard them. If there are any diseased parts of the plant that you have pruned away, do not discard them with the rest of the pruned pieces. Diseased foliage should be disposed of. When watering after pruning, be careful not to touch the wound to prevent fungus from infecting the plant through the fresh wound. Placing Sweet fennel in a well-ventilated location will also help the wound to dry out and heal in time.

For your major pruning, use sharp pruning sheers that will make clean cuts to avoid damaging your plants. As you are pruning your Sweet fennel, step back occasionally to check the appearance of the plant to make sure it has the shape you want and that you are pruning it symmetricaly. It is recommended that gloves and safety glasses be worn while pruning Sweet fennel.

Pruning is an important part of plant care and maintenance. Different plants have different pruning requirements. Some plants may need little to no pruning, while others may require more specific attention. Most plants should be pruned to remove damaged or unhealthy foliage. Other plants may be pruned to control their shape and size. Pruning may even be done to remove the flower heads of plants and stop them from self-seeding. Although some gardeners may find pruning a tedious task, it is a necessary evil and is an essential part of keeping your plants happy and healthy.

Exact needs vary, but a minimum of 6 to 8 hours per day is a good rule of thumb for Sweet fennel to grow and produce fruit.

Sweet fennel requires full sun, meaning that it should be grown in a location that gets direct sunlight that isn’t blocked by obstacles such as trees, fences, or buildings. In general, the faster the plant grows, the more hours of sunlight it will need. Morning sun is best for photosynthesis.

Sweet fennel should not need to be protected from the sun in most climates. Those who live in a desert or near the equator may find that the sun is too harsh for the types of plants they want to grow, but this is the exception.

All plants need sunlight to convert into energy. Plants that have a short growing season need even more light and energy than those that grow slowly, as they need to complete all their processes to grow and produce fruit within just a few months. The first symptoms of insufficient sunlight in Sweet fennel are pale and yellow leaves that are not able to generate enough chlorophyll to keep their healthy green color. The leaves may eventually fall off, and new growth is small and weak. The plant may become leggy and sparse as it stretches toward the available light. Finally, without enough light the plant will not be able to produce large, high-quality edible leaves or fruit. Sweet fennel needs to devote a lot of energy into growing leaves and fruits, so if there isn’t enough light available for it to convert, the harvest will suffer.

Sweet fennel can get sunburned from intense sunlight, especially when coupled with high temperatures and not having enough water. Afternoon sun tends to be most likely to burn plants. Scalded leaves develop faded patches of light brown to white on the areas at the top of the plant that are exposed to the most sun. They are especially vulnerable to this right after being transplanted from a shadier location to being in full sun. Transitioning plants gradually or providing them with a barrier while they are adjusting can help prevent sunscald in young plants. In many cases, Sweet fennel develops leaves that are large enough to protect fruits from the strongest rays of the sun. However, if intense sunlight is in contact with fruits, they can also be damaged. Avoid over-pruning those protective leaves so that the fruits don’t get burned.

Sweet fennel may become unbalanced if it gets significantly more light on one side than the other. Ideally, you can plant your Sweet fennel in a location away from obstacles that might block light, and where the distribution of sunlight is even on all sides. Be careful about planting tall species next to those that grow closer to the ground. It may not be obvious when the crops are first planted, but over time the taller plants may begin to block the amount of sunlight that can reach the shorter plants. Morning sun helps to dry dew and precipitation, which helps prevent infection from diseases that can develop when water sits on the plant. If you are watering or irrigating your Sweet fennel, this should be done in the morning.

There is an ideal temperature range that makes Sweet fennel feel at home. Under these temperature conditions, it's unlikely that you’ll have any issues with cold or hot damage to the foliage, but changing leaf colors can absolutely be a sign that Sweet fennel isn’t happy. Try to keep your Sweet fennel well within its preferred range of 70-85℉(21-30℃), but don’t panic if the temperature creeps up past 85℉(30℃) during the day or down to 70℉(21℃) at night.

If your Sweet fennel happens to be planted outside, then there’s not much you can do to try to move it indoors. However, you can certainly provide cover in ways that will help it survive any extreme temperatures that may arise unexpectedly. For instance, you can always use a few stakes and some cloth to put together a shade tent that will block out much of the sun’s intense heat from direct sunlight exposure. Similarly, Sweet fennel can be protected from the extreme cold and especially chilly winds by building a small greenhouse around the plant, which will create a greenhouse effect and warm the plant up. This can be done using garden stakes and any sort of clear or translucent plastic you may have around; if you have greenhouse plastic such as polycarbonate laying around, this works perfectly. Remove the greenhouse once temperatures warm up to 40℉(10℃) at night.

Generally speaking, Sweet fennel needs to stay within its preferred temperature range all year long. However, that doesn’t mean that care should stay the same all year long. During the warmest months of the year, Sweet fennel will need a little extra shade and a bit more of a breeze to help it cope with the hottest days. On the other hand, it may need to be moved away from chilly windows and doors during the cooler months in climates where temperatures drop below 40℉(10℃) at any point in the year.

Keeping your Sweet fennel at the right temperature can be fairly simple. Depending on where you grow it, Sweet fennel can be fairly easy to accommodate. For indoor growing, you can easily move the plant to different locations within your indoor space that best meet its temperature requirements. Avoid placing it near air conditioning vents, heaters, doors that open frequently, or drafty windows. It is a little more difficult to control the temperature around your Sweet fennel if it’s grown outside. Of course, if it’s planted in a pot, you can simply bring it indoors when the temperatures outside get too hot or too cold for Sweet fennel, but otherwise, you may need to take different measures to protect it from extreme heat or cold that may damage it irreversibly. Try placing Sweet fennel under cover to protect from both the harsh sun that can overheat it and any cold wind that could be potentially deadly for your plant.

While all plants require certain essential nutrients to develop properly, Sweet fennel has particular needs because it is grown specifically for its edible leaves. Each of the main nutrients that plants use (nitrogen, phosphorus, and potassium) contribute to one or more of a plant’s essential functions, and in the case of foliage it is nitrogen that provides the most support. It can be difficult for a Sweet fennel to get enough nitrogen from the soil to develop a satisfying harvest, which is why many gardeners prefer to supplement by feeding Sweet fennel heavily with a source of nitrogen.

There are several points during the growing season that you should apply fertilizer to benefit your Sweet fennel. The initial application occurs when you prepare the ground to be planted, at least 2 to 8 weeks before planting, amend the soil thoroughly with nutrient-rich organic material such as compost or manure. Amend the soil again at planting time, using the same method. After your seedlings emerge, wait until they reach around 2 inches tall before applying the next dose of fertilizer. After that, you can continue to regularly feed your Sweet fennel with rich organic matter or a commercial fertilizer until you harvest. A typical schedule would be to fertilize every two to three weeks. It is also a good idea to add a layer of compost or manure around the plant to provide a continuous supply of nutrients.

Remember that nitrogen-rich fertilizers are best for growing a lot of healthy foliage, so be careful about applying this near other vegetable plants that need to focus their energy on fruiting instead of foliage. You could end up with a vegetable plant that produces lots of leaves but very few vegetables. Avoid letting any type of fertilizer touch or splash onto the leaves of your Sweet fennel, since this will burn them. It is a good idea to apply it at least a couple of inches away from the base of the plant. If your Sweet fennel is unhealthy due to disease, pests, drought, or other reasons, it should not be fertilized until those other issues are resolved. Fertilizer can give a boost to otherwise healthy plants, but it can actually cause damage if applied while the plant is not in good condition.

There is not a one-size-fits-all answer to the best type of fertilizer for Sweet fennel, since the right depends on the specific type of plant being grown, the environmental conditions, and most importantly the composition of the soil. However, as Sweet fennel requires a lot of nitrogen, it is generally a safe bet to use high-nitrogen fertilizers. Manure or compost is the best choice for amending soil at the beginning of the growing season, and then feeding for the rest of the season can be done with a dry or liquid fertilizer. Feed lightly during the seedling stage, then steadily increase as the plant matures. Many people find that vegetables grown with organic fertilizers have a superior taste to those grown with chemical fertilizers, but both will work. Some popular high-nitrogen organic options include fish emulsion, soil meal, compost tea, alfalfa meal, blood meal, and chicken manure. When using chemical fertilizers, check the NPK number which indicates the relative proportion of the three macronutrients nitrogen, phosphorus, and potassium in the mixture. Since you want a high-nitrogen option, choose one where the first number is highest such as a 13-2-5, or even one that only contains nitrogen like a 16-0-0.

There are several ways to fertilize your Sweet fennel, depending on the type of fertilizer. For amending soil, the method is to dig at least 6 inches (and preferably deeper) into the soil and then incorporate your amendment at a 2:1 ratio of soil to amendment material. Mix them together well. Granular or powder fertilizers should be spread around the base of the plant in the amount recommended by the retailer. It is a good idea to mix this material into the top layer of soil to prevent it from washing or blowing away. Apply fertilizer about 2 to 3 inches away from the plant to avoid fertilizer burn. Always water thoroughly immediately after adding a dry fertilizer to soil. Water soluble chemical fertilizers can be dissolved into water and then that diluted fertilizer mix is used to water plants. This method will only be suitable if you water your Sweet fennel from a container and not by irrigation or other methods.

Nitrogen in particular can cause fertilizer burn so using high-nitrogen fertilizer does carry some risks. Over-fertilizing results in stunted growth, outer outer leaves turning yellow, and possibly wilting. Since Sweet fennel grows fast and is harvested within just a few months of planting, it may not be worthwhile to try to save an over-fertilized patch of garden. Instead, start over with new seeds in another part of the garden and consider it a lesson learned about how much fertilizer is needed to suit your specific conditions.